Butylene/Ethylene/Styrene Copolymer
A synthetic polymer used for texture. It stabilizes the oil phase and improves texture; it does not affect skin.
Supporting ingredient
It gives a product its texture, stability or shelf life. It has no claimed effect on the skin, so an efficacy tier does not apply. What is known about its safety is below
Tolerability and safety
- Irritation potential
- Low
- Allergen risk
- Low
- Pregnancy
- Safe
- Suitable for
- Normal, Dry, Combination, Oily, Sensitive
About this ingredient
Butylene/ethylene/styrene copolymer (INCI: Butylene/Ethylene/Styrene Copolymer) is a synthetic polymer used as a texture agent. It stabilizes the oil phase, gives structure to oils and improves feel, which is useful in sticks, balms and anhydrous makeup formulas. This is a functional component, not a skincare active. It does not act on the skin; its job is technical, keeping the formula homogeneous and pleasant to apply. The user notices it through product consistency rather than a direct skin effect. Applied topically it has no meaningful systemic absorption, so it can be used during pregnancy and breastfeeding in cosmetic application. Tolerance is high, with low irritation and allergy risk. As an inert high-molecular-weight polymer it is not meaningfully comedogenic and suits any skin type, including sensitive.
Frequently asked questions
Is Butylene/Ethylene/Styrene Copolymer safe during pregnancy?
Butylene/Ethylene/Styrene Copolymer is considered safe during pregnancy at typical cosmetic concentrations. Systemic absorption through the skin is minimal.
What skin types is Butylene/Ethylene/Styrene Copolymer for?
Butylene/Ethylene/Styrene Copolymer suits: normal, dry, combination, oily, sensitive.
What is Butylene/Ethylene/Styrene Copolymer and what does it do in cosmetics?
A synthetic polymer used for texture.
What's the INCI name for Butylene/Ethylene/Styrene Copolymer?
The INCI name is Butylene/Ethylene/Styrene Copolymer.
See Butylene/Ethylene/Styrene Copolymer in a product composition right on the store page
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Similar role in the formula
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