Endocrine disruptors in cosmetics: what they are and how to spot them

Endocrine disruptors are substances that interfere with the body's hormone system and cause harmful effects as a result. In cosmetics, ingredients such as some parabens, certain chemical UV filters, triclosan and BHA are suspected endocrine disruptors: they show hormone-like activity in some studies, but harm at normal cosmetic use levels hasn't been established. Regulators are reviewing them and restrict several.

What is an endocrine disruptor?

Your endocrine system is the network of glands and hormones (such as estrogen, testosterone and thyroid hormones) that controls growth, metabolism, fertility and development. A substance that mimics, blocks or alters these hormones could, in principle, disturb those processes.

The widely used definition from the World Health Organization's chemical safety program sets a high bar: an endocrine disruptor is an outside substance that alters the function of the endocrine system and consequently causes adverse health effects in an organism, its offspring or a population. Hormone-like activity in a test tube isn't enough. There has to be harm, and a plausible link between the two.

A WHO and UN Environment Programme report on the state of the science highlighted that exposure during sensitive periods such as early development matters most, because effects can be permanent and may only appear later in life.

Suspected vs confirmed endocrine disruptors

This distinction explains most of the confusion online:

• Confirmed endocrine disruptors meet the full definition: there's good evidence of hormone-related harm. In the EU, ingredients are banned or restricted when the scientific committee finds a risk.
• Suspected or potential endocrine disruptors show some hormone-like activity in lab or animal studies, but evidence of harm to people at realistic exposure is missing or unclear.

Nearly every cosmetic ingredient you'll see described as a hormone disruptor is in the second group. That's a reason for careful study and sensible limits, not for panic.

List of endocrine disruptors people ask about in cosmetics

You can read more about specific groups in our guides to whether parabens are safe and mineral vs chemical sunscreen. Aluminum salts in antiperspirants are sometimes added to these lists too; our guide to aluminum in deodorant covers what the research shows.

What the EU and FDA are doing

In the EU, cosmetic ingredients are assessed by the Scientific Committee on Consumer Safety (SCCS), and the European Commission can ban or restrict them. After a 2019 consultation, the Commission drew up a priority list of 28 potential endocrine disruptors used in cosmetics, including benzophenone-3, propylparaben, triclosan, octocrylene, homosalate, BHT, kojic acid, methylparaben and cyclopentasiloxane.

Following SCCS reviews, the EU has banned the UV filter 4-methylbenzylidene camphor (no longer allowed on the market since 2025) and set or tightened limits for several others, including benzophenone-3 (in 2022), kojic acid and triclosan (both in 2024). Where the SCCS considers an ingredient safe at a given concentration, it stays allowed up to that limit.

In the US, the FDA regulates cosmetics with fewer ingredient-specific limits. It says it continues to review the research on ingredients like parabens and hasn't found information showing they affect human health as used in cosmetics.

Are endocrine disruptors in cosmetics dangerous?

The honest answer is that risk depends on dose and exposure, and for most suspected cosmetic ingredients the evidence of harm at permitted levels is limited. A few factors change how much you're exposed to:

• Leave-on vs rinse-off: a body lotion left on all day leads to more exposure than a shampoo rinsed off after a minute.
• Area and amount: a body product covers far more skin than a lip balm.
• Frequency: daily products count more than occasional ones.
• Combined exposure: you may get the same substance from several products, and scientists are still studying how mixtures act together.

If you'd like to reduce exposure, focus on leave-on products used over large areas and every day. There's no need to throw out everything at once.

Pregnancy, babies and children

Hormones guide development in the womb and in early childhood, which is why researchers pay most attention to these periods. The EU already bans propylparaben and butylparaben in leave-on products for the diaper area of children under 3. Many parents also choose simple, fragrance-free products for babies.

How Green Point flags endocrine disruptors

Green Point takes a precautionary approach. Ingredients that appear on lists of suspected endocrine disruptors, including some parabens, chemical UV filters, triclosan, BHA, BHT, cyclic silicones and aluminum salts, are classified "Suspected endocrine disruptor", and they lower a product's score. This flag means there are open questions about the ingredient, not that a product has been shown to harm you.