Procysteine

1% line markerAI-analyzed

INCI: OXOTHIAZOLIDINECARBOXYLIC ACID

antioxidantskin conditioning agentchelating agent

What it does

A derivative of cysteine, often used as an antioxidant, skin conditioning agent, or to support skin barrier function in cosmetic products.

Beneficial for

agingsun damagedullnessdrynesstexturefine lineswrinkles

Safety summary

Generally considered safe for cosmetic use.

CAS Number

19771-63-2

1% line marker

This ingredient is commonly used as a marker to identify where ingredients drop below 1% concentration on the label.

For informational purposes only. This is not medical advice. Always patch test new products and consult a dermatologist for skin concerns.