Cystine
Cystine
Also known as: cystine
CYS
3/10
Concern level
Low concern
Cystine is a naturally occurring amino acid derivative of cysteine, important for protein synthesis and antioxidant activity in the skin.
Benefits
Supports Barrier Function
Chemical Properties
Molecular Weight
240.31 g/mol pH Range
4.00 - 7.00Typical Concentration
0.10% - 5.00%CAS Number: 56-89-3
Skin Type Compatibility
dry skin8/10
oily skin7/10
sensitive skin6/10
acne prone7/10
mature skin8/10
normal skin8/10
Interactions
incompatible with: Avoid combining with strong acids or bases that may destabilize the amino acid structure.
Risks & Warnings
Generally considered safe; however, excessive use may lead to skin irritation.
Vegan Cruelty-Free