Zinc Cysteinate
AKA: 1197186-61-0, (2R)-2-Methyl-3-sulfanylpropanoic acid--zinc (1/1)
Synthetic
Preservative
Amino Acid
Not Clean
The CIR Expert Panel concluded that the following 27 zinc salts are safe in cosmetics in the present practices of use and concentration described in this safety assessment when formulated to be non-irritating...Zinc Cysteinate...
Formula
C4H8O2SZn
Mol. Weight
185.60
CAS #
1197186-61-0
Form
Powder
Functions
Antimicrobial
Keeps your product from growing bacteria, mold, or yeast. Without these, that jar of cream becomes a petri dish in about a week.
Fights Bacteria
Traditional Use
A chelated zinc amino acid complex developed in modern skincare to improve zinc bioavailability and combine zinc's antimicrobial properties with cysteine's antioxidant and skin-conditioning benefits.
Skin Types
●all-skin-types
Best For
Acne
Pregnancy & Breastfeeding Safe
Yes
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed2 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR