Banned Cosmetic Ingredients: The Complete 2026 List by Market

If you sell a cosmetic in more than one country, "is this ingredient allowed?" has more than one answer. The European Union prohibits more than 1,600 substances in cosmetics. The United States, by contrast, restricts or bans only around a dozen. The same retinol serum that is compliant on a US shelf can be over the legal limit in the EU; a skin-lightening cream sold over the counter in one market is a prescription drug in another.

This guide lays out which cosmetic ingredients are banned or restricted across the four markets most brands enter first — the United States (FDA / MoCRA), the European Union (EC 1223/2009), the United Kingdom (post-Brexit), and Canada (Cosmetic Ingredient Hotlist) — and, just as importantly, why those answers differ.

"Banned" and "restricted" are not the same thing

Most ingredient confusion comes from collapsing two distinct regulatory categories:

Prohibited (banned): the substance cannot be used in a cosmetic at any concentration. In the EU these live on Annex II of the Cosmetics Regulation.
Restricted: the substance is permitted only under conditions — a maximum concentration, a specific product type, a required warning label, or an age restriction. In the EU these are Annex III (and the positive lists: Annex IV colorants, Annex V preservatives, Annex VI UV filters).

A "restricted" ingredient is not a problem ingredient — it is a conditional one. Retinol is restricted, not banned, in the EU; you can use it, you just cannot exceed the limit. Getting this distinction right is the difference between a compliant reformulation and an unnecessary one.

Quick-reference table

The most-asked-about ingredients and their status across the four flagship markets. Click any ingredient for the full per-market breakdown, concentration limits, and the regulation behind it.

Ingredient	EU	US	UK	Canada
Hydroquinone	Banned (Annex II)*	Rx drug	Banned*	Restricted
Parabens (propyl/butyl)	Restricted	Permitted	Restricted	Restricted
Methylisothiazolinone	Rinse-off only	Permitted	Rinse-off only	Restricted
Formaldehyde	Banned (added)	Permitted	Banned (added)	Restricted
Triclosan	Restricted	Banned in washes	Restricted	Restricted
Phthalates (DBP, DEHP)	Banned (Annex II)	Permitted	Banned	Restricted
Oxybenzone	Restricted	Permitted†	Restricted	Restricted
Retinol	Restricted (0.3%)	Permitted	Restricted	Permitted
Salicylic Acid	Restricted	OTC drug 0.5–2%	Restricted	Restricted
Titanium Dioxide	Restricted (nano)	Permitted	Restricted (nano)	Permitted

*Hydroquinone has narrow Annex III exceptions for hair products and artificial nail systems. †US oxybenzone is federally permitted but banned for sale in Hawaii, Key West, and other jurisdictions under reef-protection laws. Always confirm against the current regulation for your specific product category — see sources below.

Why the EU bans 1,600+ and the US bans ~12

This is the single biggest source of cross-market surprise, and it comes down to regulatory philosophy.

The EU operates on the precautionary principle: a substance classified as carcinogenic, mutagenic, or toxic to reproduction (a "CMR substance" under the CLP Regulation) is automatically prohibited in cosmetics unless specifically exempted. Annex II is long because the EU bans by category, then carves out exceptions.

The US, until recently, took the opposite stance: an ingredient was legal unless the FDA affirmatively proved it unsafe and acted to restrict it. The Modernization of Cosmetics Regulation Act (MoCRA), in force since 2023, expanded FDA authority considerably — facility registration, product listing, adverse-event reporting, and the power to mandate recalls — but it did not import the EU's banned list. The FDA's explicitly prohibited or restricted ingredients still number only around a dozen (21 CFR 700.11–700.35), including bithionol, mercury compounds, vinyl chloride, halogenated salicylanilides, chloroform, certain CFC propellants, hexachlorophene, and methylene chloride.

The practical takeaway: EU compliance is the harder constraint. A formulation that clears the EU Annexes will almost always clear the US — but not the reverse. If you are building one formula for multiple markets, design to the EU limits.

Ingredients banned outright in the EU (and usually UK)

These cannot be used in EU/UK cosmetics at any level (subject to narrow exceptions):

Hydroquinone — the classic skin-lightening agent. Prohibited for general cosmetic use under Annex II; permitted only in specific hair and artificial-nail applications. In the US it sits in a different regime: after the 2020 CARES Act, OTC hydroquinone drug products were largely withdrawn, so most US hydroquinone is now prescription-dispensed.
Certain phthalates — DEHP, DBP, and BBP are Annex II CMR-listed. Diethyl phthalate (DEP), the one most used as a fragrance denaturant, remains permitted, which is why "phthalate-free" claims need to specify which phthalate.
Added formaldehyde — deliberately added formaldehyde is prohibited in the EU. Formaldehyde-releasing preservatives (see below) are a separate, restricted category.
Several parabens — isopropyl-, isobutyl-, phenyl-, benzyl-, and pentylparaben were banned outright in the EU in 2014; see the restricted section for the ones that survived.

Restricted (allowed, but with limits) across markets

These are the ingredients most likely to trip up a brand expanding markets, because they are permitted — just not the way you might assume.

Retinol and the 2024 EU limit

Retinol is now restricted in the EU to 0.3% in body lotions and 0.05% in face and hand creams. The US imposes no federal cosmetic limit. A 1% retinol night cream — a normal US product — exceeds the EU cap several times over. This is one of the most common reformulation triggers for US brands entering Europe.

Parabens that survived

Methylparaben and ethylparaben remain permitted in the EU up to 0.4% individually and 0.8% in mixtures. Propylparaben and butylparaben were tightened to 0.14% combined. The full paraben picture is a good example of why "parabens are banned" is wrong — some are, most aren't.

Salicylic acid

In the EU, salicylic acid is restricted (with a child-under-3 caution). In the US, anti-acne products at 0.5–2% are regulated as OTC drugs, not cosmetics — a completely different submission pathway. The molecule isn't the issue; the claim and concentration determine the regime.

Titanium dioxide (the nano question)

Titanium dioxide is permitted as a UV filter and colorant everywhere, but the EU restricts the nanomaterial form — notably banning it from loose-powder applications where it could be inhaled. Note that the 2022 EU ban on titanium dioxide as a food additive (E171) does not apply to cosmetics, a point that causes recurring confusion.

Preservatives under pressure

Preservative regulation has tightened sharply over the last decade, and it is where formulators get caught most often:

Methylisothiazolinone (MI/MIT) — after a wave of contact-allergy cases, the EU restricted MI to 0.0015% in rinse-off products only and banned it from leave-on cosmetics in 2017. The US has no equivalent restriction, though many US brands removed it voluntarily.
DMDM Hydantoin and other formaldehyde releasers — permitted but restricted, and required to carry a "contains formaldehyde" warning above a threshold in the EU. Several US states are moving toward restrictions.
Phenoxyethanol — broadly permitted up to 1%, but a frequent subject of safety review; worth monitoring rather than assuming permanence.

Sunscreen UV filters: the widest gap of all

Sunscreen actives are where US and EU rules diverge most dramatically. In the US, sunscreens are OTC drugs and the approved-filter list has barely changed in decades. The EU and much of Asia approve modern filters (Tinosorb, Mexoryl variants) that simply aren't available to US formulators.

On top of that, a layer of local bans applies to oxybenzone and octinoxate: Hawaii (Act 104, effective 2021), Key West, the US Virgin Islands, Aruba, Palau, and others prohibit their sale to protect coral reefs, even though both remain federally legal. A sunscreen brand can be fully FDA-compliant and still illegal to sell in Honolulu.

How to check your own formulation

The reference tables above cover the headline ingredients, but a real formulation has 20–40 INCI names, and the answer for each depends on the market, the product category, and the concentration. Three ways to approach it:

Manually, against the primary sources. Cross-reference every INCI name against the EU Annexes, the FDA CFR, and the Health Canada Hotlist. Accurate, but slow — a single multi-market product review can take a regulatory consultant 10–20 hours.
With our free INCI Ingredient Checker. Paste an ingredient list and get an instant per-market snapshot of banned, restricted, and concentration-limited substances across 15 markets — no signup.
With Cosmetica. For full formulations across your whole catalog, Cosmetica analyzes every ingredient against every market simultaneously and links each finding to its underlying SCCS opinion, CIR review, FDA CFR section, or EU Annex entry — so you can show your work in an audit.

Frequently asked questions

What is the most commonly banned cosmetic ingredient?

Among well-known actives, hydroquinone is the most broadly restricted — banned for general cosmetic use in the EU and UK, and reclassified as a prescription drug in the US. Among preservatives, methylisothiazolinone saw the most dramatic tightening.

Are parabens banned?

Mostly no. Five parabens (isopropyl-, isobutyl-, phenyl-, benzyl-, pentyl-) were banned in the EU in 2014, but methylparaben and ethylparaben remain permitted with concentration limits, and the US imposes no paraben ban at all. "Paraben-free" is a marketing position, not a universal regulatory requirement.

If an ingredient is FDA-legal, can I sell it in Europe?

Not necessarily. The EU prohibits far more substances than the US and imposes concentration limits the US does not. Always validate against the EU Annexes before assuming a US-compliant product is EU-compliant.

How often do these lists change?

Frequently. The EU updates its Annexes several times a year based on SCCS opinions; US states are increasingly passing their own ingredient laws. Treat any banned-ingredient list as a snapshot and re-check before each launch.

Sources

This guide draws on the EU Cosmetics Regulation (EC) No 1223/2009 and its Annexes, the US FDA regulations at 21 CFR Part 700, Health Canada's Cosmetic Ingredient Hotlist, and opinions of the EU Scientific Committee on Consumer Safety (SCCS). Individual ingredient pages linked above cite the specific Annex entries and opinion numbers. This article is general information, not legal or regulatory advice; verify current requirements for your product category and market before relying on it.