Cysteine
Cysteine
Also known as: cysteine
CYS
2/10
Concern level
Low concern
Cysteine is a sulfur-containing amino acid that acts as a powerful antioxidant, promoting skin health and supporting collagen production.
Chemical Properties
Molecular Weight
121.16 g/mol pH Range
5.00 - 7.00Typical Concentration
0.10% - 5.00%CAS Number: 52-90-4
Skin Type Compatibility
dry skin6/10
oily skin7/10
sensitive skin4/10
acne prone5/10
mature skin8/10
normal skin7/10
Risks & Warnings
May cause irritation in sensitive individuals; use caution in high concentrations.
Vegan Cruelty-Free
