California Proposition 65 for Beauty Sellers

The first California notice a beauty brand receives rarely arrives from a regulator. It arrives from a law firm representing a competitor or a consumer, names a substance in the product, & gives a short window to respond. By the time it lands, the decision that mattered was made months earlier, when somebody signed off the artwork without asking whether the product needed a warning on the pack.

This article sets out how sellers usually get on top of that risk: what the law asks for in practice, who in the supply chain can be pursued, which substances come up most often in beauty products, what testing a factory can produce & what only the seller can decide, where a warning has to appear, how the wording is fixed, & when reformulating makes more commercial sense than warning. It ends with the records worth keeping & what to put in a brief.

Why the first notice arrives out of the blue

The mechanism is unusual in consumer goods law, & it explains why beauty brands are surprised. Rather than a regulator inspecting shelves, a private party can serve a notice alleging that a product exposes consumers to a listed substance without a warning, & the notice is served on the businesses in the chain. The effect is that enforcement activity clusters around categories where testing is easy to commission & settlements are predictable, & cosmetics sit in that group because a laboratory can measure metals in a lipstick in a fortnight.

The commercial consequence is that a brand's exposure does not scale with the size of the brand. A small seller with one product in a Californian marketplace can face the same notice as a multinational, & the cost of defending it is what drives the behaviour of the whole sector. The practical response in the trade has been to test, to warn, or to reformulate, & to decide which of the three before the artwork goes to print.

A second feature is the timing. A notice can be served long after the product was sold, & the brand has to be able to say what was in the batch, what testing existed at the time & what the label said. That means the file has to survive the shelf life of the product, which is a documentation problem rather than a chemistry problem.

What the law asks for in practice

Stripped of its wording, the requirement is usually described as a choice between two positions. Either the product does not expose a consumer to a listed substance above the level that triggers a warning, in which case the brand needs to be able to show why, or it does, in which case a warning is provided in the manner the rules set out. There is no third option of staying quiet & hoping, because staying quiet is the position the notices are designed to attack.

The level that triggers a warning is not a single number for every substance. For some substances the market works against a published safe harbour level, which is a concentration or a daily exposure figure that a brand can measure against. For others there is no safe harbour, & the assessment has to be made on the facts of the product. For a seller, the practical result is that testing data is only useful if it is expressed in the units the comparison needs, & a certificate reporting a detection below a limit of quantification may or may not be enough to support a position.

Because the detail changes as substances are added, removed or reassessed, the list should be checked against the current version rather than taken from a supplier's summary or from an article written several years ago. The habit that protects a brand is a review at each new product & at each reformulation, recorded with a date, rather than a one-off judgement made at launch.

Who in the chain can be pursued

The chain matters because a notice can be served on more than one party. A manufacturer, a distributor, a retailer & an importer can each count as a business in the chain, & a marketplace listing can put an out-of-state brand inside the reach of the rules because the product is being offered for sale to Californian consumers. A brand that assumes its importer or its platform will absorb the issue is usually wrong on both counts.

For a marketplace seller, the practical exposure is the listing itself. A product offered online to Californian buyers is offered for sale there, & the warning obligation can attach to that offer. This is why the warning placement question is not only about the pack: a listing that carries no warning, while the physical pack does, is a gap that is easy for a claimant to point at, & equally easy for a seller to close once somebody owns it.

The useful internal decision is who signs the warning decision. In most brands it is not the formulator, because the formula is only half of the question, & it is not the designer, because the designer only implements. Naming one person who owns the test result, the warning position & the artwork field is what turns the obligation into a process rather than an argument.

Which substances come up most often in beauty products

Three groups come up repeatedly, & they are all materials questions rather than formula questions. The first is metals in colour. Pigment grades vary by origin & by processing, & a pigment acceptable in one market may carry a trace metal profile that triggers a review in another. The second is preservative chemistry. Systems built around formaldehyde donors bring a different analysis from systems built around organic acids, because the question is not only what is in the jar but what it becomes over time.

The third group is powders & particulates. A pressed or loose powder raises a question about particles small enough to be inhaled, which is a handling & format question rather than an ingredient question, & it changes what the label has to say. Talc-based formats bring their own historical scrutiny, which is one reason talc-free options have become a normal part of a colour brief rather than a novelty.

A fourth group is less obvious & more common than brands expect: the packaging. A pigment printed on a tube, a coating on a compact, a metal component in a pump, & a cap decorated with a colourant can each contribute a substance that ends up in the assessment. Where a brand tests only the bulk, the packaging contribution is unmeasured, & that is a gap a claimant can exploit.

What a factory can produce & what only the seller can decide

A factory can supply the data that makes a decision possible, & it is worth being precise about the boundary. From the factory come the raw material specifications, the certificates of analysis for the lots used, the pigment grade information & its metals profile where the supplier provides one, the safety data sheet for the bulk, the fragrance declaration from the fragrance house, & the stability summary behind the shelf life. Where a brand needs metals testing on the finished product, a factory can arrange it on request for a specific batch or a specific formula version.

What the factory cannot do is decide whether a warning is required for a brand's product in a brand's market. That decision depends on how the product is presented, how it is used, how much is applied, & what the current rules say, & it belongs to the party placing the product on the market. A supplier that offers to issue a compliance statement covering another company's labelling position is offering something it cannot stand behind.

The practical arrangement that works is a defined testing plan agreed at the brief stage: which substances are tested, on what sample, at what frequency, & in what units the result will be reported. A one-off test on a development sample is far less useful than a plan tied to pigment lots or to formula versions, because a change of pigment source is exactly when the position moves.

Where a warning has to appear

Placement is where most sellers get caught, because the answer depends on how the product is sold. A product sold in a physical retail environment has one set of expectations about what the consumer sees before purchase, an online listing has another, & a brand selling through both has to cover the two rather than assuming the pack carries the whole burden.

For an online listing, the warning has to be visible in the place a buyer reads before ordering, which in practice means the listing content rather than only the packaging. Many marketplaces provide a structured field for exactly this purpose, & a seller that leaves it empty while the physical pack carries a warning has documented its own gap. Equally, a seller that fills the field but never prints the pack has a different gap, in the other direction.

The third placement question is the secondary pack. Where the product is sold in a carton, a set or a bundle, the warning normally has to be readable on the unit a consumer handles before buying. A bundle assembled at a fulfilment centre from components that individually carried a warning can lose that warning entirely, which is a risk that grows with the number of prep partners a brand uses.

Wording, & why the exact text matters

The wording is not a creative exercise. The market works around standard formulations that have been used at scale, & a brand that paraphrases them for tone gives up the predictability that makes the standard wording useful. Paraphrasing also introduces a new question for a claimant: whether the altered text conveys what the standard text conveys, which is a harder & more expensive question to answer than simply using the known version.

For products sold to consumers in California, the common version of the standard text names the substance, states that the product can expose the user to it, & states that the substance is known to cause the outcome the listing attaches to it. For products not sold to consumers in the state, a shorter form is normally used. Both forms are widely published, & both are best copied exactly rather than reworded, with the substance name taken from the current list rather than from an older artwork file.

The substance name matters as much as the sentence around it. A warning that names a substance the product does not contain is as much of a problem as a warning that omits one it does, & a brand running several pigments through one warning template should confirm each time that the name still matches what is in the jar.

Reformulating out of the warning, or warning & continuing

Once a brand knows the position, the choice is commercial rather than technical. Warning & continuing keeps the formula & the cost base, costs the brand some shelf appeal, & requires the discipline to keep the warning aligned with the product as it changes. Reformulating removes the warning from the pack, usually at the cost of a pigment change, a preservative change or a fragrance change, & each of those can ripple into colour, odour, stability & labelling.

The cost of reformulating is rarely the material cost. It is the sampling round, the stability work, the possibility that the colour no longer matches the range, the artwork change, & in some markets a fresh assessment. A colour-driven reformulation can also move a shade enough that an existing customer notices, which is a marketing cost that does not appear on the project sheet.

A third option that brands often overlook is range-level planning. Where one shade in a range carries the issue & the others do not, a brand can decide the warning position per shade rather than per range, & can decide the launch order so that the items needing more work come later. Planning the range around the test results is cheaper than testing a finished range & then deciding what to do with it.

Comparing the options

The table below compares the routes a seller usually considers once a substance question is on the table, what each one requires, & the detail that is most often underestimated. It is a relative comparison of effort & exposure rather than a statement of what any particular product should do.

Read the table as a comparison of effort rather than of legality. The route a brand chooses depends on its channel mix, its margin & how many markets share the same formula, & the same product can sensibly take different routes in different markets.

Fragrance, alcohol & packaging as hidden contributors

Fragrance is the contributor most often left out of the assessment, because a brand orders a compound & receives a scent rather than a composition. A compound can carry trace components that matter to a substance review, & the level in the finished product is what determines the outcome rather than the level in the compound. Where the fragrance level is adjusted for cost or for strength, the assessment should move with it, & so should the allergen declaration on the pack.

Alcohol-based formats add a separate layer that has nothing to do with substance listing. A high alcohol content raises flammability labelling, fixes a flash point & determines how a product may be shipped, which affects air freight limits in particular. A brand moving a mist or a fragrance from sea freight to air to hit a launch date can find that the transport documentation & the classification, rather than the customs duty, set the schedule.

Packaging is the third contributor. Decorated components, printed coatings, metal pumps & coloured caps all sit in contact with the product or with the consumer's hands, & a supplier that can describe the materials & their colourants is worth keeping close during a substance review. The question to ask is simple: which materials in this pack are in contact with the product, & what are they made of?

Records worth keeping when a question comes

Six records answer most of what a notice or a buyer questionnaire asks for. The formula & its version history with dates. The pigment & raw material specifications, plus the certificates for the lots actually used. Any substance testing report, with the sample identified, the method named & the reporting limit stated. The pack artwork as printed, showing any warning & its placement. The listing content as published, showing the warning field. The decision record that says who reviewed the position & when.

The decision record is the one brands skip & the one that helps most. A one-line entry per product per review, naming the reviewer, the date, the test or reference relied on & the route chosen, proves that the question was considered rather than ignored. Reconstructing that reasoning two years later from an email chain is time nobody has during a response window.

Two habits make the file usable. Keep the documents with the batch records rather than in a folder belonging to a person, because people leave. Then keep the testing reports at the reporting limit they were issued with, because a summary that says a substance was not detected is only meaningful alongside the limit that the method could reach.

What to put in the brief

Say that California is a destination, because the brief changes once that is known. Name every channel the product will be sold through, since a listing carries its own warning field & the pack carries another. Say whether the brand will test, warn or avoid, or say that the decision is open, because the answer changes which pigment grades are worth sampling.

• Whether California is a destination, & through which channels the product is sold there.
• The pigments or colourants in the formula, & whether the grade can be substituted.
• The preservative system, & whether it depends on a formaldehyde donor.
• The fragrance compound, its declaration & the intended level in the finished product.
• The packaging materials in contact with the product, plus any decorated or printed component.
• Any testing already commissioned, with the sample, method & reporting limit.
• Who inside the brand owns the warning decision, & where the warning would appear.
• Whether the product is sold in bundles, sets or secondary packs assembled elsewhere.

Then agree how the position will be reviewed. A short review at each new product, each pigment substitution & each fragrance level change, with the outcome written down, keeps the file current for the price of a meeting. A position set once at launch & never revisited is the pattern that produces the letter nobody was ready for.

Where our capability fits

We supply the technical data behind a substance review: raw material specifications, the certificate of analysis for the lots used, pigment grade information from the supplier, safety data sheets, the fragrance declaration from the fragrance house, the composition breakdown for the assessment, & the stability summary behind the shelf life. Where a brand needs testing on a finished product, we can arrange it against a defined plan & report the sample, the method & the reporting limit alongside the result.

We work with brands on private label (your brand on a proven base), OEM/ODM contract manufacturing & full custom formula development, & pigment & preservative substitutions are handled through the same change control as any other formula amendment. Our lines include a long-wear foundation, a turmeric body wash & a deep cleansing oil capsule, all documented with the material data a review needs.

Tell us which destinations are in scope, which channels you sell through & what you already know about the materials, & we will come back with what we can supply, what testing we can arrange, & where a decision belongs with your brand rather than with us. Start at our inquiry page, email capsulebiotech@163.com, or message the right team on WhatsApp: Capsule Series (capsules only) +86 158-7655-5319, Cosmetics Series (serum, hair care, body care, fragrance) +86 158-7655-5319. The testing side is covered in our article on heavy metal testing in colour cosmetics, & the wider colour picture in our comparison of pigment rules by market.

General manufacturing information, not regulatory or legal advice. Listed substances, warning wording, safe harbour levels, placement rules & reporting thresholds change over time, so the position for a specific product should be confirmed against the current requirements with a qualified advisor before it is placed on sale.