Ingredient review
Nylon-12/6/66 Copolymer
INCI: NYLON-12/6/66 COPOLYMER
A synthetic powder that helps makeup and skincare glide on smoothly and stay put, with a low risk of irritation.
In plain English
Nylon-12/6/66 Copolymer is a man-made plastic powder added to cosmetics to make them feel silky and spread easily. It also helps products resist water and sweat, so your makeup lasts longer. Think of it as tiny, smooth beads that fill in uneven spots on your skin, creating a soft-focus effect. It's not absorbed into the skin and sits on the surface, so it's generally gentle and non-irritating.
Review score
Safety, usefulness, and evidence
Potentially useful with some tradeoffs
The evidence base is useful, but some claims depend heavily on the formula.
Risk flags are low for most users, though the finished product can still irritate.
- Source
- synthetic
- Evidence
- moderate
- Irritation
- low
- Clogging risk
- low
Quick decision guide
Useful, but context matters
Nylon-12/6/66 Copolymer is generally a lower-concern ingredient when the full formula suits your skin.
Plain-English read
Treat this as a practical screening step before you compare products that contain this ingredient.
- Step 1Start with the score, then check the irritation and clogging risk before judging Nylon-12/6/66 Copolymer.
- Step 2Use the "Best for" and "Use caution if" sections to match the ingredient to your skin, not just to a marketing claim.
- Step 3If a product stings, breaks you out, or worsens irritation, judge the finished formula and stop using it even if the ingredient scores well.
Score terms in plain English
Irritation risk
lowLess likely to sting, burn, or bother most users, though sensitive skin can still react.
Clogging risk
lowLess likely to feel heavy or contribute to clogged pores for most skin types.
Evidence level
moderateThere is useful support, but formula details and claim strength still matter.
What it is
A synthetic copolymer made from three types of nylon monomers (12, 6, and 66), processed into fine spherical particles. It is a white, free-flowing powder used in cosmetics as a texture modifier and film former.
How it works
The spherical particles act like tiny ball bearings, reducing friction between the product and your skin for a smooth, even application. They also absorb excess oil and create a thin, breathable film that helps other ingredients stay in place and resist moisture.
Pros
Silky texture
The spherical particles make creams and powders feel luxuriously smooth, improving the user experience of foundations, concealers, and sunscreens.
Long-lasting wear
It forms a water-resistant film that helps makeup stay put through sweat and humidity, reducing the need for touch-ups.
Cons and cautions
Not biodegradable
As a synthetic plastic, it does not break down easily in the environment, which may be a concern for eco-conscious consumers.
Synthetic origin
Derived from petrochemicals, it may not align with 'clean' or natural beauty preferences, even though it is considered safe for use.
Best for
- Anyone who wants a smooth, long-lasting makeup finish
- People with oily skin who appreciate oil-absorbing powders
Use caution if
- Those strictly avoiding all synthetic or plastic-derived ingredients
Usage tips
Safety summary
Nylon-12/6/66 Copolymer is considered safe for use in cosmetics at typical concentrations. It has low irritation and comedogenic potential, and is not absorbed into the skin. The main concerns are environmental persistence and synthetic origin.
Research notes
Safety assessments by the Cosmetic Ingredient Review (CIR) panel have concluded that nylon polymers are safe for use in cosmetics. Studies show minimal skin penetration and low toxicity. Environmental impact data is limited but the material is not readily biodegradable.
Common label clues
- Typical concentration
- 1% to 10%
- Regulatory status
- Approved for use in cosmetics in the US (FDA), EU (CosIng), and many other regions. No known restrictions at typical use levels.
- Common uses
- Foundations, Concealers, Sunscreens, Lip products, Powders
- Environmental note
- As a synthetic polymer, it is not biodegradable. However, it is not classified as a primary microplastic for environmental concern by all regulatory bodies. Some brands are moving toward biodegradable alternatives.
Good to know
- Nylon-12/6/66 Copolymer is different from microplastics used in exfoliating scrubs; it is a fine powder that stays on the skin's surface.
- It is often combined with other film formers to boost water resistance in sunscreens and long-wear makeup.
Common questions
What is Nylon-12/6/66 Copolymer in beauty products?
Nylon-12/6/66 Copolymer is a man-made plastic powder added to cosmetics to make them feel silky and spread easily. It also helps products resist water and sweat, so your makeup lasts longer. Think of it as tiny, smooth beads that fill in uneven spots on your skin, creating a soft-focus effect. It's not absorbed into the skin and sits on the surface, so it's generally gentle and non-irritating.
What does Nylon-12/6/66 Copolymer do in a beauty product?
The spherical particles act like tiny ball bearings, reducing friction between the product and your skin for a smooth, even application. They also absorb excess oil and create a thin, breathable film that helps other ingredients stay in place and resist moisture.
Is Nylon-12/6/66 Copolymer safe for most people?
Nylon-12/6/66 Copolymer is considered safe for use in cosmetics at typical concentrations. It has low irritation and comedogenic potential, and is not absorbed into the skin. The main concerns are environmental persistence and synthetic origin.
Who should be careful with Nylon-12/6/66 Copolymer?
Those strictly avoiding all synthetic or plastic-derived ingredients
Research sources
Ingredient reviews are educational and are not medical advice. Patch test new products and ask a licensed clinician about persistent irritation, allergies, pregnancy-specific questions, or diagnosed skin conditions.