PEG-8/Smdi Copolymer

PEG-8/SMDI Copolymer is a polyether-urethane formed from PEG-8 and SMDI that acts as a flexible cosmetic film former. It's added to improve wear resistance, limit flaking, and give lightweight hold in color cosmetics and hair styling products.
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Ingredient Snapshot

Overview
A flexible film-former that helps makeup and hair products wear longer.
Category
Skin Conditioning
Type
Film Former

Ingredient Ratings

Overall Rating

Fair

Comedogenic Risk

None

Skin Benefits

Improves wear with reduced transfer in color products and provides flexible control in hair styling. Contributes a lightweight, comfortable film on skin or hair.

Uses In Skincare & Cosmetics

Common in mascaras, eyeliners, liquid lip colors, and hair gels or styling sprays for improved endurance and hold.

Comedogenic Rating

This ingredient is not typically evaluated for comedogenicity, and no standardized rating is available.

Safety

Low risk in finished cosmetics with minimal residual monomer. Mild irritation from film formation is possible near delicate areas; discontinue use if discomfort occurs.

Is PEG-8/Smdi Copolymer a Good Ingredient?

Rated Fair: it offers flexible film formation for wear and hold, but results vary by formula and the evidence for direct skin conditioning is limited. Some users may experience mild irritation or a tight film feel, especially near the eyes or on sensitive skin, which keeps it below Good.

Products with PEG-8/Smdi Copolymer

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