Polystyrene

Polystyrene

AKA “Polystyrene, Styropor”

Synthetic

Ingredient Facts

Polystyrene

AKA: Styropor

Synthetic · Film Forming · EWG: 4

Synthetic

Occlusive

Skin Conditioner

Synthetic

Clean

Creates a smooth, protective layer that helps products glide on evenly and last longer on skin.

CAS #

9003-53-6

Form

Powder

See origin →

Functions

Film Forming

Creates a physical seal on skin to lock moisture in and keep irritants out. The "slugging" ingredient — barrier protection.

Viscosity Controlling

Occlusive

Creates a physical seal on skin to lock moisture in and keep irritants out. The "slugging" ingredient — barrier protection.

Smoothing

Moisturizing

Locks in moisture to keep skin soft and supple throughout the day

Strengthens Barrier

Anti-Inflammatory

Creates protective layer

Traditional Use

A synthetic plastic polymer developed in the early 20th century and adapted for cosmetic use. Used in cosmetics primarily as microbeads in exfoliating products and as a thickening or suspending agent (largely phased out due to environmental concerns).