If you run US e-commerce business, or have purchased electronic products in California, you have most likely seen the “WARNING” label with a yellow triangle exclamation mark on the packaging. There are many misconceptions about California Proposition 65: some people regard it as a “toxic product certification”, some think it is a mandatory access standard for California, and some small and medium-sized sellers believe they will not be targeted due to small sales volume. In fact, California Prop 65 is a California state law on consumers’ right to know, neither a product quality certification nor a sales ban. This article starts from the perspective of electronic products, and sorts out the core rules from entry-level judgment to practical implementation, which is suitable for ordinary consumers and novice sellers for reference.
I. Entry-Level Basics: The Essence and Core Logic of Prop 65
1.1 Plain-Language Definition: The Core is Consumers’ Right to Know
First, clarify the most core positioning: the full name of California Proposition 65 is the Safe Drinking Water and Toxic Enforcement Act of 1986, named after it was the 65th ballot proposition of that year, and the competent authority is the California Office of Environmental Health Hazard Assessment (OEHHA for short). OEHHA has two core responsibilities: first, to regularly update the list of carcinogenic/reproductive toxic chemical substances; second, to formulate safe harbor thresholds — that is, statutory reference values at which the risk of human exposure to the substance is extremely low.
The core logic of this regulation is consumers’ right to know: if a product operated by an enterprise contains listed substances, and exposes California consumers to the substance under reasonably foreseeable use/misuse scenarios, and the enterprise cannot prove that the exposure level is below the safe harbor threshold or meets statutory exemptions, it must inform consumers of the risk in advance, and consumers independently decide whether to purchase. The presence of listed substances in a product does not automatically trigger a warning obligation, which needs to be comprehensively judged in combination with exposure scenarios, exposure levels and exemption conditions.
1.2 Enforcement Framework and Compliance Costs
The enforcement subjects of Prop 65 include three categories: the California Attorney General, local prosecuting authorities, and private enforcers who meet statutory conditions. Private enforcement is a special mechanism of this regulation, but not any entity can initiate it: before filing a lawsuit, the enforcer must serve a 60-day notice of violation to the accused party, the California Attorney General and relevant prosecuting authorities in accordance with the law, and submit a certificate of merit that meets statutory requirements (a document proving that its prosecution claim has reasonable factual and legal basis), otherwise the subsequent enforcement procedure cannot be initiated. This 60-day notice is a statutory pre-procedure for private enforcement, but rectification or communication during the notice period does not automatically stop the lawsuit; the final outcome depends on multiple factors such as the validity of the notice, whether the government intervenes, the claim, and the evidence of both parties.
The online rumor that “private enforcers can get 50% of the fine share” is misinformation: the law does not stipulate a fixed share ratio. The upper limit and specific amount of civil penalties are determined by the court according to the circumstances of the violation, duration, degree of fault, etc.; while attorney fees, settlement compensation, rectification commitments, injunctive clauses and other contents are usually determined by court judgment or settlement agreement between the two parties through necessary judicial procedures, and there is no unified share standard.
The regulation prohibits enterprises from knowingly and willfully exposing consumers to listed chemical substances without providing compliant warnings. The term “knowingly and willfully” here means that the enterprise knows the product contains listed substances and willfully carries out business activities that lead to consumer exposure (such as production, import, sales), rather than subjectively hoping to cause health damage. In disputes, the enterprise’s awareness of chemical substances and exposure facts, whether exposure can be attributed to the enterprise’s behavior, exposure level and whether exemptions apply, all need to be determined in combination with evidence and specific legal rules, and there is no “presumption of guilt” with pre-government testing.
According to Section 25249.7 of the California Health and Safety Code, the upper limit of civil penalties is $2,500 per day per violation. If the case is settled, the costs usually include: fines, plaintiff’s attorney fees, product rectification requirements, warning compliance commitments, regular compliance reports, injunctive clauses, etc.
1.3 Three Core Entry-Level Misconceptions
People who are new to Prop 65 often fall into the following three pitfalls, which need to be clarified in advance:
Misconception 1: There is an “official Prop 65 certification”. There is no official certification at all. The “Prop 65 certificates” on the market are all test or evaluation reports issued by third-party institutions, which can only be used as evidence for compliance defense, not official qualification certificates.
Misconception 2: Having a warning = the product is toxic and harmful / exposure must exceed the standard. A warning does not mean that the product will necessarily cause health damage, nor does it necessarily prove that exposure has been determined to exceed the safe harbor threshold — enterprises may choose to provide warnings based on evaluation conclusions, evaluation uncertainties or risk management strategies. The safe harbor threshold itself is a very conservative low-risk standard, and even if exposure slightly exceeds the threshold, it does not mean that health hazards will necessarily occur.
Misconception 3: Small sellers/niche categories will not be inspected. Private enforcers usually pay attention to small and medium-sized business entities with weak compliance awareness, rather than only targeting large brands; small sales volume does not mean that they will not become enforcement targets.
II. Applicable Boundaries: Four Steps to Determine Whether a Warning Obligation Needs to Be Fulfilled
Many people mistakenly think that “products sold to California must have Prop 65 warnings”, but in fact, four conditions must be met at the same time; if one is missing, there is no need to fulfill the warning obligation.
2.1 Four Core Thresholds for Compliance Judgment
You can screen one by one in order:
Threshold 1: Whether it meets the small business exemption. Enterprises with no more than 10 employees can claim exemption in accordance with the law, but the personnel of affiliated companies and co-employers need to be calculated in combination with the statutory definition (for example, multiple stores controlled by the same operation team, the number of people needs to be counted together). The specific application needs to be confirmed in combination with the facts of the case, and it is not recommended that enterprises claim exemption on their own without professional verification.
Threshold 2: Whether the product contains OEHHA-listed carcinogenic/reproductive toxic chemical substances. If the product does not contain substances in the list, naturally no warning is required.
Threshold 3: Whether the enterprise knowingly and willfully causes California consumers to be exposed to the substance under reasonably foreseeable use/misuse scenarios. If the product is only for industrial customers and is fully sealed with no exposure path for ordinary consumers, this condition may not be met; but ordinary consumer-grade products sold to California that consumers can contact during normal use usually meet this condition.
Threshold 4: Unable to prove that the exposure level is below the safe harbor threshold, and there is no statutory exemption for the exposure path. If it can be proved through testing or evaluation that the human exposure level under normal use is lower than the corresponding safe harbor threshold, or meets the statutory exceptions, no warning is required.
Core conclusion: Products sold to California do not necessarily need to be labeled with warnings; the warning obligation needs to be fulfilled only when the above four conditions are met at the same time.
2.2 Covered Electronic Products and Business Scenarios
From the perspective of electronic product categories, the coverage is not only the product bodies such as mobile phones, computers, headphones, smart wearables, small home appliances, but also accessories such as data cables, chargers, batteries, protective cases, and even ink on packaging and manuals — as long as they contain listed substances and are accessible to consumers, they may be included in the scope.
The responsible subjects are not limited to manufacturing factories: manufacturers, importers, packagers, distributors, retailers, as long as the product finally reaches California consumers, may bear compliance responsibilities.
The criteria for determining “reaching California consumers” include but are not limited to: e-commerce stores do not block California shipping addresses, shipping via FBA (Fulfillment by Amazon, a warehousing and distribution service provided by the platform) or platform California warehouses, independent e-commerce websites default to nationwide delivery across the US, B2B products can be resold to ordinary consumers. All sales channels targeting California consumers, such as offline stores, e-commerce platforms, independent e-commerce websites, live streaming commerce, etc., are applicable.
2.3 Confusing Boundaries and Exception Verification
The following common “taken-for-granted exemptions” are not valid and need to be verified one by one:
First, **industrial-grade/B2B products are not automatically exempt. The core of judgment is whether there is an exposure path accessible to ordinary consumers, rather than just looking at the sales target. For example, if an industrial power adapter is resold to ordinary consumers for home use, and the lead exposure on the casing exceeds the standard, it still needs to fulfill the warning obligation.
Second, *internally sealed components are not directly exempt from liability*. Sealing is an important factor in exposure assessment, but it is still necessary to consider reasonably foreseeable scenarios such as wear and tear, damage, user self-disassembly and repair, and dust migration during normal use. For example, although mobile phone batteries are sealed structures, but if electrolyte leaks after being dropped and can contact the skin, the exposure risk still needs to be assessed.
Third, *statutory and factual exceptions require professional verification*. These include no identifiable personal exposure, naturally occurring chemical substances, federal law preemption, occupational exposure scenarios, etc. These exceptions need to be judged by professionals in combination with regulatory provisions and case facts, and enterprises cannot claim exemption on their own.
III. Core Judgment Criteria: Safe Harbor Thresholds and Exposure Assessment
The core judgment logic of Prop 65 is different from most electronic regulations: it is not about whether the product “contains” toxic substances, but about how much the human body “can be exposed to” under normal use. Even if the content of a certain substance in the product is very high, if it is completely sealed and cannot be contacted, no warning is required; conversely, even if the content is very low, if it is contacted for a long time and is easy to enter the mouth, it may be necessary to fulfill the warning obligation.
3.1 Safe Harbor Thresholds: Check by Toxicity Endpoints
Safe harbor thresholds are statutory values formulated by OEHHA that enterprises can use to claim the defense of “no warning required”, divided into two categories:
- No Significant Risk Level (NSRL): For carcinogenic substances, it refers to the dose that, when exposed daily for a lifetime, results in a cancer risk of less than one in 100,000, which is a very conservative safety standard.
- Maximum Allowable Dose Level (MADL): For reproductive toxic substances, it refers to the dose that, when exposed daily, does not cause observable effects on reproduction or development.
The following are reference thresholds for common listed substances in electronic products (values will be dynamically updated, please refer to the latest safe harbor table released by OEHHA):
- Lead (CAS 7439-92-1, CAS is the Chemical Abstracts Service number, a unique identification code for each chemical substance): NSRL (carcinogenic) 15μg/day, MADL (reproductive toxicity) 0.5μg/day
- DEHP (a common plasticizer, CAS 117-81-7): NSRL 310μg/day, MADL 410μg/day
It should be noted that not all listed substances have corresponding safe harbor thresholds. If OEHHA does not give the NSRL/MADL of a certain substance, enterprises cannot use this as a reason for exemption, and need to conduct a toxicological risk assessment on their own to prove that the exposure has no significant risk, or choose the path of adding warnings or rectifying to reduce exposure.
3.2 Six-Step Process for Exposure Assessment
The core of judging whether an electronic product needs a warning is to carry out exposure assessment. Novices can make a preliminary judgment according to the following six steps, and complex scenarios need to entrust professional institutions:
Step 1: Confirm the OEHHA-listed substances contained in the product and the corresponding toxicity endpoints (carcinogenic/reproductive toxic/both).
Step 2: Identify accessible parts: distinguish between exposed parts (such as casing, buttons), detachable parts (such as battery covers, replaceable earphone sleeves), and fully sealed internal parts (such as chips soldered on the motherboard).
Step 3: Set the user group and contact frequency: distinguish between adults/children, occasional contact/long-term holding/may enter the mouth. The exposure estimation results under different usage scenarios will be significantly different, and the specific difference depends on the product type, contact method and evaluation parameters, and cannot be generalized.
Step 4: Determine exposure paths: including skin contact, oral contact, inhalation of dust/volatiles generated by wear and tear, etc.
Step 5: Estimate daily exposure: calculate the amount of substance that the human body can contact daily in combination with parameters such as contact area, substance migration rate, daily use duration, etc.
Step 6: Form a conclusion against the safe harbor threshold: if it is lower than the threshold, you can claim that no warning is required; if it is higher than the threshold, you need to fulfill the warning obligation; if in doubt, it is recommended that a toxicology expert issue a formal evaluation report.
3.3 Probative Force Boundaries of Common Tests and Evidence
Different test types have different functions, so there is no need to blindly do a full set of tests:
- Total content test: detects the total proportion of a certain substance in the product, which can only be used for initial screening (to determine whether the substance exists), cannot directly prove human exposure — for example, DEHP in fully sealed internal plastic parts will not be contacted no matter how high the content is.
- Migration/wiping, simulated sweat/saliva, dust/volatilization tests: these tests obtain substance migration/release data under different exposure paths, which are input parameters for exposure assessment. They need to be combined with user groups, contact frequency, contact area, sample representativeness and toxicological conversion to complete the daily exposure assessment, and cannot be used alone as a basis for compliance judgment. The test method must match the actual use scenario, for example, testing children’s headphone cables needs to use simulated saliva instead of dry cloth wiping.
- Supplier declaration/SDS (Safety Data Sheet, a document recording chemical composition and hazards): can only be used for supply chain initial screening, cannot be used alone as evidence for compliance defense.
- Toxicological/exposure assessment report: it is one of the core defense evidence, and its admissibility depends on sample representativeness, methodological rationality, matching degree of parameter assumptions with actual scenarios, expert qualifications, etc. It is recommended that it be jointly reviewed by lawyers with experience in US Prop 65 and toxicology experts.
IV. High-Risk Inspection of Electronic Products: Substances, Components and Priorities
Sellers do not need to test all products at the same time, and can first inspect according to high-risk points to improve efficiency and reduce costs.
4.1 Reference for Corresponding Inspection of High-Risk Substances and Components
Inspection principle: specific listed substances, CAS numbers, and toxicity endpoints are subject to OEHHA’s current list, and cannot be directly presumed by substance categories (for example, not all phthalates are listed, only specific types are included in control); problems such as skin allergies that are not carcinogenic/reproductive toxic are not within the scope of Prop 65 warnings.
The following are references to common high-risk substances in electronic products (not exhaustive, need to be checked against your own products):
| Substance Category | Specific Substance (Example) | CAS Number (Example) | Common Sources | Main Exposure Paths | Verification Method |
|---|---|---|---|---|---|
| Heavy metals | Lead | 7439-92-1 (listed) | Solder, lead-acid batteries, pigments, metal coatings, packaging ink | Skin contact, ingestion of wear dust | Total content initial screening + wiping migration test |
| Heavy metals | Cadmium | 7440-43-9 (listed) | Some nickel-cadmium batteries, metal contacts, plastic stabilizers | Skin contact, dust inhalation | Total content + migration test |
| Heavy metals | Nickel compounds (partially listed) | / | Metal coatings, contacts, battery tabs | Subject to the contact route corresponding to the listed toxicity endpoint | Migration/exposure test for the corresponding endpoint |
| Organic pollutants | DEHP (phthalates) | 117-81-7 (listed) | Soft PVC data cables, headphone cables, soft rubber buttons | Long-term skin contact, migration into the mouth | Total content + simulated sweat migration test |
| Organic pollutants | Brominated/phosphate flame retardants (partially listed) | / | Engineering plastic casings, circuit boards | High-temperature volatilization, dust inhalation | Total content + volatilization assessment |
| Organic pollutants | Bisphenol A (BPA) | 80-05-7 (listed) | Hard plastic packaging, button coatings | Skin contact, oral migration | Migration test |
| Organic pollutants | Formaldehyde | 50-00-0 (listed) | Packaging printing ink, some adhesives | Inhalation, skin contact | Volatile detection |
| Battery-related | Lithium salts, electrolyte components | / | Lithium battery electrolyte | Skin/oral contact after damage | Separately check listing status + damage exposure assessment |
Note: The listing status and sources of all substances need to be confirmed in combination with the product’s BOM (Bill of Materials, a list recording all parts and materials of the product), CAS number, and actual test results, and cannot directly apply the examples.
4.2 Risk Priority Inspection Matrix
Inspect in order of priority from high to low, and prioritize high-risk products:
- High priority (inspect first):
Material category: soft PVC/soft rubber exposed parts, wearable coatings, accessible parts with batteries/metal coatings
Usage scenario category: long-term handheld/skin-contact products, electronic accessories that children may put in their mouths
Supply chain category: products provided by suppliers without material declarations and no change control - Low priority (inspect later): products with a high proportion of fully sealed internal components and complete supply chain compliance evidence
V. Safe Harbor Warning Requirements: Versions, Placement Rules and Supply Chain Responsibilities
If it is determined after assessment that a warning needs to be provided, it must meet the regulatory requirements to have defensive effect. First of all, it is clear that the regulation requires enterprises to provide “clear and reasonable warnings”, and warnings made in accordance with the safe harbor format formulated by OEHHA can be directly presumed to meet the “clear and reasonable” requirement, with clearer defensive effect; enterprises can also adopt other formats, but they need to prove on their own that they meet the “clear and reasonable” standard.
5.1 Warning Versions and Applicable Conditions
Safe harbor warnings are divided into two categories: full format (long version) and simplified format (short version). All versions must include common core elements: the warning word “WARNING”, a yellow triangle exclamation mark icon (can be omitted in special scenarios), risk type (carcinogenic/reproductive toxic/both), at least one relevant listed substance, and the official query link P65Warnings.ca.gov.
- Full format (long version) warning: applicable to scenarios with sufficient space such as physical products with sufficient packaging/label area, online product detail pages, etc., and all common core elements must be fully marked.
- Simplified format (short version) warning: can only be used for small products with insufficient label area, online list pages/catalogs and other scenarios with limited space, and must meet the simplified elements and chemical substance naming rules stipulated by OEHHA. The rules related to short-version warnings are under dynamic revision, and the latest scope of application, format requirements, effective date and transition period shall be subject to the final rules officially released by OEHHA.
Language requirement: products sold to California must provide English warnings; other languages are optional supplements, not mandatory.
5.2 Placement Rules and Implementation Archiving
Warnings must be placed in compliant positions to meet the safe harbor conditions:
- Physical products: warnings must be placed in a conspicuous and visible position on the packaging or the product itself. Placing them only in the manual does not meet the safe harbor requirements for product labels (consumers cannot see them before purchase).
- Online/catalog sales: clear warnings or prominent links directly pointing to warning content must be provided on the display page of the specific product before consumers make a purchase decision; they shall not be placed only on the store homepage, general terms or after-sales instructions. Online list pages/catalogs can use short-version warnings, and detail pages need to provide full-format warnings or prominent links.
After implementation, compliance records must be retained: including platform field configuration records, page screenshots, SKU and warning version mapping tables, update time traces, etc., as evidence for subsequent defense.
5.3 Supply Chain Responsibility Allocation and Transmission Obligations
The division of responsibilities between upstream and downstream supply chains must be premised on regulatory conditions:
Manufacturers, producers, packagers, and importers usually have the statutory obligation to provide warning notices and compliant warning materials to downstream supply chains.
Retailers can only apply for statutory liability protection if they meet three conditions at the same time: first, they have timely received written warning notices and compliant materials provided by upstream suppliers; second, they have not changed the composition, structure or packaging of the product; third, they have synchronously displayed the warnings in the corresponding sales channels in accordance with regulatory requirements. If a retailer modifies the product on its own, or knows that the product has risks but does not cooperate with displaying the warning, it cannot claim this protection.
It should be noted that supply chain contracts can agree on commercial compensation liabilities, but cannot exempt any party from statutory compliance obligations.
VI. Entry-Level Practice: Action Guides for Two Groups of People
The following are direct operation guidelines for ordinary consumers and novice sellers, which can be implemented quickly.
6.1 Ordinary Consumers: Understand Warnings + Reasonable Protection
There is no need to worry excessively when you see a Prop 65 warning, you can handle it in the following ways:
First, read the warning and grasp 3 key points: risk type (carcinogenic/reproductive toxic), listed chemical substances involved, official query link P65Warnings.ca.gov; you can query by yourself if you need to know details.
Risk cognition reminder: products that adults occasionally contact (such as occasionally used chargers) usually have low exposure levels, but it is impossible to judge whether they are below the safe harbor threshold only by warnings or contact frequency, because individual usage habits vary greatly.
High-risk scenarios need more attention: products that children may put in their mouths/long-term skin contact, exposure during pregnancy, product damage and liquid leakage, etc., need to be more vigilant.
Daily methods to reduce contact: wash hands frequently after contacting electronic products, avoid children biting electronic products, and replace damaged cables and casings in time.
Supplementary reminder: no Prop 65 warning does not mean that the product is absolutely safe — it may be that the exposure level is indeed below the safe harbor threshold, or it may be that the product is not sold to California and has not carried out relevant assessments.
6.2 Novice Sellers: 7-Step Basic Compliance Process
Novice sellers who have just entered the California market can complete basic compliance according to the following seven steps:
Step 1: Judge subject qualification. Confirm whether the enterprise meets the preliminary conditions for small business exemption. If in doubt, it is recommended to entrust professionals to verify, to avoid claiming exemption on your own leading to violations.
Step 2: Confirm sales scope. Verify whether the product reaches California consumers (see Section 2.2 for judgment criteria).
Step 3: Material initial screening. Sort out the product’s BOM table, conduct a preliminary screening against the high-risk substance list, and exclude obviously risk-free components.
Step 4: Exposure assessment. Conduct a preliminary exposure assessment according to the six-step process: first clarify the exposure path and usage scenario, then entrust matching test items; if it involves high-risk scenarios such as children and damaged batteries, or there are disputes over method parameters, it is necessary to entrust toxicology or exposure experts to complete a formal assessment.
Step 5: Choose compliance path. Choose according to business situation: rectify to reduce exposure (such as replacing environmentally friendly materials), add compliant warnings, or stop selling in the California market.
Step 6: Channel implementation. Physical products are labeled as required, online stores display warnings on corresponding pages according to rules, ensuring that both list pages and detail pages meet the requirements.
Step 7: Retain compliance evidence. All compliance materials are sorted and archived, and oral statements have no defensive effect.
6.2.1 Commercial Judgment Conditions for Warning vs Rectification
You can refer to the following criteria to choose the compliance path:
- Prioritize rectification: high-end brands (worried that warnings will affect brand reputation), children’s electronic products (warnings have a great impact on conversion rate and strict platform requirements), long-term models with stable supply chains (one rectification can be applied for a long time, with lower comprehensive cost).
- Prioritize warning: white-brand/cost-effective products, test-sale models/short-life-cycle products, products whose rectification cost is much higher than expected revenue.
- Additional assessment required: if the platform has special compliance requirements, or the product involves high-risk children’s scenarios, you cannot rely solely on warnings to avoid all risks, and you need to meet other relevant regulatory requirements at the same time.
6.2.2 Compliance Evidence Package Template
The compliance evidence package can be sorted into the following four categories to avoid omissions:
- Material documents: BOM table, CAS number list of corresponding substances, supplier material declaration/SDS
- Assessment documents: test reports (total content/migration, etc.), assumptions and conclusions of exposure assessment
- Implementation documents: label finalization, online warning display archives, channel synchronization records
- Traceability documents: supplier change notices, product batch traceability records, regular compliance inspection records
VII. Advanced Judgment: Pitfall Avoidance and Risk Response
The following is advanced content for sellers with certain operation experience, to help avoid high-frequency risks.
7.1 Core Differences from Other Common Electronic Regulations
Many sellers confuse Prop 65 with other electronic regulations, resulting in repeated testing or compliance omissions. The core differences are as follows:
| Comparison Item | California Prop 65 | EU RoHS | US CPSIA | FCC/UL |
|---|---|---|---|---|
| Control Logic | Takes human exposure level as the core to judge whether a warning obligation is triggered, essentially protecting consumers’ right to know | Restricts the content of harmful substances in homogeneous materials | Federal mandatory safety standard for children’s products | FCC manages electromagnetic compatibility, UL is third-party electrical safety certification |
| Scope of Application | California state law, consumer products for all ages | EU region, electrical and electronic products | Whole US, children’s products aged 12 and below | FCC applies to corresponding categories of electronic equipment across the US; UL requirements depend on products, channels, contracts, etc. |
| Compliance Path | Exposure compliance / add warning / rectification | Content compliance | Must meet mandatory standards, no warning path | FCC needs to meet the authorization, testing, and labeling requirements for corresponding equipment; UL is not legally mandatory for all products |
| Core Focus | Human-accessible exposure level | Content of the material itself | Children’s safety (physical + chemical, etc.) | Electromagnetic compatibility/electrical safety |
In a nutshell: passing RoHS, CPSIA (Consumer Product Safety Improvement Act, US federal children’s product safety regulation), FCC, UL does not mean compliance with Prop 65, because the control logic is completely different — RoHS looks at the content of harmful substances in homogeneous materials, Prop 65 looks at whether human exposure under reasonably foreseeable use triggers a warning obligation, FCC and UL do not involve chemical exposure assessment at all; especially for electronic products that are contacted for a long time and easy to enter the mouth, the compliance difference is more obvious. Children’s electronic products need to meet the requirements of both CPSIA and Prop 65.
7.2 Four High-Frequency Compliance Pitfalls to Avoid
The following are the four types of pitfalls that novice sellers most often fall into:
Pitfall 1: Mistakenly thinking that online sales only need physical labels. E-commerce products sold to California need to display warnings before consumers purchase, and only pasting them on physical packaging does not meet the requirements.
Pitfall 2: Randomly writing warning content. Warnings lacking common core elements do not meet safe harbor requirements and may still be sued.
Pitfall 3: Copying competitors’ warning templates. Different products have different materials, exposure scenarios, and listed substances involved. Copying templates may lead to problems such as wrong substances and mismatched risk types, which instead increases compliance risks.
Pitfall 4: Equating substance content compliance with compliance. Prop 65 controls exposure level rather than total content — internal components contain toxins but have no exposure path, no mandatory rectification is required; low content but long-term contact exposure exceeds the standard, still need warning.
7.3 Disposal Guide for Receiving a 60-Day Notice of Violation
If you receive a 60-day notice of violation, you must respond in an orderly manner according to the statutory procedure. The core steps are as follows:
Core disposal steps:
Step 1: Immediately preserve all relevant documents and product samples, including sales records, material documents, BOM tables, test reports, historical page screenshots, etc., and must not delete or modify them.
Step 2: Verify the validity of the notice: confirm whether the qualification of the sending subject, the involved product models, chemical substances, exposure claims, and sales period are consistent with the actual situation.
Step 3: Conduct internal assessment: entrust US compliance lawyers with Prop 65 experience and toxicology/exposure experts to check the substance listing status, exposure path, existing compliance evidence, and judge the risk of violation.
Step 4: Formulate a response plan: choose defense, rectification, communication or settlement according to the assessment results; settlement is not the only path, nor does it mean admitting violation by default.
Timeline management:
- Within 1 week: complete evidence preservation, entrust professional lawyers to intervene, to avoid leaving unfavorable evidence due to self-disposal.
- Within the 60-day notice period: complete internal exposure assessment, determine defense/rectification/negotiation strategy; if no agreement is reached after the deadline and the government does not intervene, private enforcers may file a formal lawsuit.
Forbidden actions: - Do not privately contact the plaintiff to admit responsibility, to avoid forming unfavorable evidence.
- Do not delete historical sales pages, material records and other evidence materials.
- Do not arbitrarily modify labels or page content, to avoid unfavorable presumption of inconsistent statements before and after.
- Do not only reach a private settlement without long-term compliance rectification, to avoid being targeted by enforcers again.
7.4 Key Points of Dynamic Compliance Maintenance
The rules and lists of Prop 65 will be dynamically updated, and the assessment needs to be re-conducted in the following three situations:
- OEHHA’s listing list or warning rules are updated, such as adding new listed substances, adjusting safe harbor thresholds, modifying warning format requirements.
- The product’s materials, structure, usage scenarios change, such as replacing the supplier’s plastic raw materials, changing adult models to children’s models for sale.
- Adding California sales channels, such as originally only selling to the US East Coast, adding FBA California warehouse shipping.
Daily maintenance requires regular checking of supply chain material declarations, synchronously updating warning information of all sales channels, to avoid compliance omissions.
VIII. Learning Summary: Judgments You Can Now Make Independently
After reading the previous content, whether you are an ordinary consumer or a novice seller, you can independently complete the following 6 core judgments and operations:
First, you can judge whether an electronic product needs to fulfill the Prop 65 warning obligation through the four thresholds of “small business exemption → whether it contains listed substances → whether it causes foreseeable exposure to California consumers → whether it is below the safe harbor threshold”, and will no longer mistakenly think that “products sold to California must have warnings”.
Second, you can understand the core meaning of safe harbor warnings, and establish a reasonable risk perception combined with your own usage scenarios — neither excessive anxiety when seeing warnings, nor ignoring high-risk scenarios such as children putting products in their mouths or product damage, and know to reduce contact risks by washing hands frequently and avoiding biting.
Third, you can complete the preliminary exposure assessment of electronic products according to the six-step process of “confirming listed substances → identifying accessible parts → setting usage scenarios → determining exposure paths → estimating daily exposure → comparing thresholds”, and also choose corresponding test types such as total content initial screening, migration test, volatilization assessment according to needs, to avoid wasting costs by blindly doing a full set of tests.
Fourth, you can distinguish the core differences between Prop 65 and common electronic regulations such as EU RoHS, US CPSIA, FCC/UL, and clearly understand that the compliance conclusions of other regulations cannot directly replace Prop 65 assessment, to avoid repeated testing or compliance omissions.
Fifth, you can complete preliminary compliance operations according to the 7-step basic process for novice sellers, and also know how to sort out effective compliance evidence packages according to the four categories of materials, assessment, implementation, and traceability, and will not claim compliance based solely on oral statements.
Sixth, you can identify common compliance misconceptions such as “official certification” and “small sellers will not be inspected”, and also know the basic disposal steps and forbidden actions after receiving a 60-day notice of violation, and will not leave unfavorable evidence due to panic disposal.
IX. Regulation Verification and High-Frequency FAQs
The list and rules of Prop 65 are regularly updated, and all information shall be subject to the latest official release.
9.1 Official Verification Portals (Updated in Real Time)
The following are the official authoritative verification channels of OEHHA, where you can directly query the latest rules and data:
- OEHHA Proposition 65 Chemicals List: https://oehha.ca.gov/proposition-65/proposition-65-list
- OEHHA No Significant Risk Levels & Maximum Allowable Dose Levels: https://oehha.ca.gov/proposition-65/no-significant-risk-levels-nsrls-and-maximum-allowable-dose-levels-madls
- California Code of Regulations, Title 27, Article 6: Clear and Reasonable Warnings: https://oehha.ca.gov/proposition-65/clear-and-reasonable-warnings
- OEHHA Proposition 65 Rulemaking & Notices: https://oehha.ca.gov/proposition-65/rulemaking
9.2 Answers to Frequently Searched Questions
- Do electronic products that are RoHS compliant still need Prop 65 compliance? Yes. The control logic of the two is completely different. RoHS restricts the content of harmful substances in homogeneous materials, Prop 65 judges whether a warning obligation is triggered based on human exposure level. RoHS content compliance does not mean that the exposure level is below the safe harbor threshold. (See Section 7.1 for details)
- Does a Prop 65 warning mean the product is unsafe? No. The warning only indicates that the exposure level may exceed the safe harbor threshold, or the enterprise chooses to actively inform based on risk management, which does not mean that the product will necessarily cause health damage. (See Section 1.3 for details)
- Do small businesses with ≤10 employees have no compliance risk at all? No. The scope of application of the small business exemption, affiliated entities, and the calculation caliber of co-employer personnel need to be confirmed according to the statutory definition, and not all enterprises with ≤10 employees meet the exemption conditions. (See Section 2.1 for details)
- Is it okay to only paste physical labels for online sales? No. E-commerce products sold to California need to provide clear warnings or prominent links on the display page before consumers make a purchase decision, and only pasting them on physical packaging does not meet the requirements. (See Section 5.2 for details)
- Do fully sealed internal components not need to consider Prop 65 at all? No. It is still necessary to assess the exposure path under reasonably foreseeable scenarios such as wear and tear, damage, user disassembly and repair, and dust migration during normal use, and cannot be directly exempted on the grounds of “sealing”. (See Section 2.3 for details)
- Will you absolutely not be sued if you paste warnings according to safe harbor requirements? No. Warnings that meet the safe harbor format and placement requirements can be directly presumed to meet the statutory requirements of “clear and reasonable warnings”, which is strong defense evidence, but if the plaintiff claims that the substance labeling is incorrect, the placement position is non-compliant, etc., it may still cause disputes, and complete implementation records need to be retained as the basis for defense. (See Section 5.2 for details)
The core of California Proposition 65 is consumers’ right to know, rather than product sales ban or quality access requirements. Whether you are a consumer or an operator, as long as you clarify the judgment logic and implement assessment and evidence retention step by step, you can effectively manage related risks.