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Is 4-PCA Dimethicone vegan?

4-PCA Dimethicone

Vegan

4-PCA Dimethicone (Bis-4-PCA Dimethicone) is a siloxane polymer bearing 3-(4-carboxy-2-oxo-1-pyrrolidinyl)propyl groups; it is a synthetic silicone-based conditioning agent used in cosmetics.

Also known as Bis-4-PCA Dimethicone, Siloxanes and Silicones, 3-(4-Carboxy-2-Oxo-1-Pyrrolidinyl)Propyl Me, Di-Me, Siloxanes, and Silicones, 3-(4-Carboxy-2-Oxo-1-Pyrrolidinyl)Propyl Me, Di-Me
INCI name 4-PCA Dimethicone
CAS number 179005-03-9
CosIng ID 99191
Last reviewed 4 July 2026

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