Other ingredient

Cystine

The oxidized dimer of cysteine formed by a disulfide bond between two cysteine molecules; used in cosmetics as a conditioning amino acid with roles in keratin integrity and as a precursor to antioxidant glutathione — distinct from cysteine (the monomer free thiol form).

Also known as: l-cystine

Skin conditioningAmino acidAntioxidant precursor

Benefits

  • Supports keratin and hair protein structure via disulfide bonds
  • Precursor to glutathione antioxidant system
  • Conditions skin

No known watch-fors.

At a glance
CategoryOther
IrritancyLow
Beginner-friendlyYes
Pregnancy safeYes
In your routine

Generally well-tolerated and easy to layer.

Found in 2 products
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Products with Cystine

Bichup Self-Generating Anti-Aging EssenceEssence
The History of Whoo
Bichup Self-Generating Anti-Aging Essence
Time-Filler 5-XP Wrinkle Correction CreamMoisturizer
Filorga
Time-Filler 5-XP Wrinkle Correction Cream