Quick answer
Key benefits: Hydration.
Cystine
Updated
Cystine
Purpose
Amino acid that offers potential hydration benefits for skin.
Rating
GOOD
Category
Humectant
INCI Purpose
ANTISTATIC, FRAGRANCE, HAIR CONDITIONING
Benefits
Hydration
— Attracts and locks in moisture to keep skin plump and dewy
Alternative Names
At a Glance
Article
Cystine is an amino acid that offers potential hydration and skin barrier benefits.
References
Supercharged Hydration
How Hyaluronic Acid Benefits Skin
What is Dehydrated Skin & How to Choose the Best Products
What Your Moisturizer Must Contain
Moisturizer Myths You Should Stop Believing Now
The Benefits of Glycerin in Skin Care
The Best Face Oils for Skin
How Facial Oils Help Skin