Curi/Atlas/Cysteine

INCI · antioxidant · CIR review pending · used in 6 products

Cysteine

Cysteine is a naturally occurring amino acid with the INCI name L-Cysteine (CAS #: 52-90-4 / 3374-22-9). According to CosIng, it serves multiple functions in cosmetic formulations including antioxidant, antistatic, hair conditioning, hair waving or straightening, masking, and reducing. It is found across a range of hair care and skin care products.

Evidence level

weak

EWG score

—

Comedogenic

—

Category

antioxidant

● Benefits

Cysteine provides antioxidant protection and is used for hair conditioning and hair waving or straightening applications. Its reducing properties make it relevant in bond-repair and structural hair treatments.

antioxidanthair-conditioninganti-aging

● Cautions

Where Curi finds it.

Curi's featured formulas containing Cysteine.

Klairs Klairs Daily Comfort Hand Cream

Klairs · 클레어스

Klairs Daily Comfort Hand Cream

nourishes the handsabsorbs quickly

HERA Hera Age Away Vitalizing Night Mask

Hera Age Away Vitalizing Night Mask

protects skin against external irritantsgives skin suppleness and glow

IOPE IOPE Air Cushion Cover No.21

cushion foundation

IOPE · 아이오페

IOPE Air Cushion Cover No.21

draws hydration like a magnet with Air Prism Water patented technologyincreases skin overall moisture levels and radiance with 3D prism pearls

Mediheal Mediheal A:PE Proatin Mask

Mediheal · 메디힐

Mediheal A:PE Proatin Mask

soothes irritated, sensitive skinfortifies skin's barrier

IOPE IOPE Air Cushion Natural

IOPE · 아이오페

IOPE Air Cushion Natural

provides SPF 50 PA++ sun protectionevens skin tone

More formulas with Cysteine.

6 formulas in cufind's catalog carry Cysteine.

AHC A.H.C Natural Perfection Double Shield Sun Stick

A.H.C Natural Perfection Double Shield Sun Stick

dehydrationredness