
Cosmetic Raw Materials & Intermediates
L-Cystine
L-Cystine is a white or nearly white crystalline powder that is practically insoluble in water and alcohol. It is widely used as a raw material in cosmetics, particularly in hair perm formulations, as well as in nutritional supplements and cell culture media. Its functions in personal care formulations include enhancing hair resilience, reinforcing nail structure, and maintaining skin vitality.
- CAS No.: 56-89-3
- Molecular Formula: C₆H₁₂N₂O₄S₂
- Purity: 99% min