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Is Oxothiazolidine vegetarian?

Oxothiazolidine

Vegetarian Vegetarian
Vegan Vegan

Oxothiazolidine, also known as procysteine, is a synthetic organic compound derived from cysteine, classified as a 2-oxo-1,3-thiazolidine derivative, used as a skin conditioning agent in cosmetics.

Also known as 2-Oxo-1,3-thiazolidine, Procysteine
INCI name Oxothiazolidine
EC number 474-200-5
CosIng ID 86797
Last reviewed 9 July 2026

An ingredient is considered vegetarian if it avoids components derived from killing an animal.

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