Ingredient review
Nylon-611/Dimethicone Copolymer
INCI: NYLON-611/DIMETHICONE COPOLYMER
A synthetic film-forming polymer that gives a silky, smooth feel and helps makeup last longer without clogging pores.
In plain English
This ingredient is a man-made polymer that combines nylon (a strong plastic-like material) with silicone. In skincare and makeup, it creates a very thin, flexible film on the skin that feels silky and helps other ingredients stay in place. It's often used in foundations and primers to give a smooth, blurring effect and improve how long the product lasts. Because it's non-comedogenic and low-irritation, it's generally safe for most skin types.
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-611/Dimethicone 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-611/Dimethicone 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 by reacting nylon-611 (a type of polyamide) with a dimethicone (silicone) derivative. It is a solid powder at room temperature but forms a flexible film when applied to skin.
How it works
When applied, the copolymer forms a thin, breathable film on the skin's surface. This film helps other ingredients (like pigments or UV filters) spread evenly and stay put longer. It also imparts a silky, non-greasy feel and can help reduce the appearance of fine lines by filling in uneven texture.
Pros
Improves product longevity
Helps makeup and sunscreen stay in place for hours without smudging or fading, so you need fewer touch-ups.
Silky, non-greasy feel
Gives a smooth, velvety texture that makes products glide on easily and leaves skin feeling soft, not sticky or oily.
Cons and cautions
Not biodegradable
As a synthetic polymer, it does not break down easily in the environment, which may be a concern for eco-conscious users.
May conflict with silicone-free routines
If you avoid silicones for personal or skin reasons, this ingredient contains a silicone component and would not fit your criteria.
Best for
- People who want long-lasting makeup or sunscreen
- Those with oily or combination skin looking for a smooth, matte finish
Use caution if
- Individuals who strictly avoid silicones or synthetic polymers in their routine
Usage tips
Safety summary
Generally recognized as safe for topical use in cosmetics. Low irritation and comedogenic potential. No significant safety concerns at typical concentrations.
Research notes
Limited independent studies on this specific copolymer, but it is structurally similar to other well-studied silicone-nylon copolymers used in cosmetics. Safety assessments by industry panels support its use.
Common label clues
- Typical concentration
- 1% to 10%
- Regulatory status
- Approved for use in cosmetics globally, including by the EU CosIng database and the US FDA (as a cosmetic ingredient). No known restrictions at typical concentrations.
- Common uses
- Foundations, Primers, Sunscreens, Lip products
- Environmental note
- As a synthetic polymer, it is not biodegradable and may contribute to microplastic pollution. Some brands are moving toward biodegradable alternatives.
Good to know
- Often used in combination with other film-formers to boost water and sweat resistance.
- It is considered safe by major cosmetic safety panels at typical use levels.
Common questions
What is Nylon-611/Dimethicone Copolymer in beauty products?
This ingredient is a man-made polymer that combines nylon (a strong plastic-like material) with silicone. In skincare and makeup, it creates a very thin, flexible film on the skin that feels silky and helps other ingredients stay in place. It's often used in foundations and primers to give a smooth, blurring effect and improve how long the product lasts. Because it's non-comedogenic and low-irritation, it's generally safe for most skin types.
What does Nylon-611/Dimethicone Copolymer do in a beauty product?
When applied, the copolymer forms a thin, breathable film on the skin's surface. This film helps other ingredients (like pigments or UV filters) spread evenly and stay put longer. It also imparts a silky, non-greasy feel and can help reduce the appearance of fine lines by filling in uneven texture.
Is Nylon-611/Dimethicone Copolymer safe for most people?
Generally recognized as safe for topical use in cosmetics. Low irritation and comedogenic potential. No significant safety concerns at typical concentrations.
Who should be careful with Nylon-611/Dimethicone Copolymer?
Individuals who strictly avoid silicones or synthetic polymers in their routine
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.