Ingredient review
Ethylene/Sodium Acrylate Copolymer
INCI: ETHYLENE/SODIUM ACRYLATE COPOLYMER
A safe synthetic polymer that helps products spread smoothly and feel lightweight on skin.
In plain English
This ingredient is a man-made polymer (a long chain of repeating molecules) that helps skincare products feel silky and spread easily. It also helps thicken formulas and can create a light, invisible film on your skin that holds other ingredients in place without feeling heavy or sticky.
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
Ethylene/Sodium Acrylate 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 Ethylene/Sodium Acrylate 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 ethylene and sodium acrylate, used as a film former and thickener in cosmetics.
How it works
When applied, it forms a thin, flexible film on the skin that helps other ingredients stay put and gives a smooth, velvety feel. It also increases the viscosity (thickness) of a product, making it easier to apply evenly.
Pros
Lightweight feel
Creates a silky, non-greasy finish that works well for oily and combination skin types.
Improves product stability
Helps keep emulsions from separating and maintains consistent texture over time.
Cons and cautions
Synthetic origin
Not derived from natural sources, which may be a drawback for those seeking plant-based or natural formulations.
Potential tackiness at high levels
In very high concentrations, it can leave a slightly sticky or tacky residue on the skin.
Best for
- Anyone looking for lightweight, non-greasy moisturizers or sunscreens
- People with oily or combination skin who prefer a matte finish
Use caution if
- Those who strictly avoid all synthetic ingredients
- Individuals with known allergies to acrylate polymers (rare)
Usage tips
Safety summary
Ethylene/Sodium Acrylate Copolymer is considered safe for use in cosmetics. It has low irritation and comedogenic potential, making it suitable for most skin types. Rare allergic reactions are possible but uncommon.
Research notes
Research indicates that this copolymer is non-toxic and non-sensitizing at cosmetic concentrations. It is widely used in personal care products and has a long history of safe use.
Common label clues
- Typical concentration
- 0.5% to 5%
- Regulatory status
- Approved for use in cosmetics by the FDA and the European Commission, with no known restrictions at typical usage levels.
- Common uses
- Moisturizers, Sunscreens, Makeup primers, Hair styling products
- Environmental note
- As a synthetic polymer, it is not biodegradable. However, it is used in very small amounts and is not considered a major environmental concern compared to microplastics.
Good to know
- This polymer is often used in combination with other thickeners to achieve the perfect texture.
- It is considered safe by major regulatory bodies when used within typical cosmetic concentrations.
Common questions
What is Ethylene/Sodium Acrylate Copolymer in beauty products?
This ingredient is a man-made polymer (a long chain of repeating molecules) that helps skincare products feel silky and spread easily. It also helps thicken formulas and can create a light, invisible film on your skin that holds other ingredients in place without feeling heavy or sticky.
What does Ethylene/Sodium Acrylate Copolymer do in a beauty product?
When applied, it forms a thin, flexible film on the skin that helps other ingredients stay put and gives a smooth, velvety feel. It also increases the viscosity (thickness) of a product, making it easier to apply evenly.
Is Ethylene/Sodium Acrylate Copolymer safe for most people?
Ethylene/Sodium Acrylate Copolymer is considered safe for use in cosmetics. It has low irritation and comedogenic potential, making it suitable for most skin types. Rare allergic reactions are possible but uncommon.
Who should be careful with Ethylene/Sodium Acrylate Copolymer?
Those who strictly avoid all synthetic ingredients Individuals with known allergies to acrylate polymers (rare)
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.