Faex (yeast extract) is an aqueous extract of yeast cells with amino acids, peptides, and saccharides. In skincare, it's used as a humectant and conditioning agent that boosts hydration, supports barrier feel, and adds antioxidant support.
Not typically evaluated for comedogenicity — no standardized rating available.
Our take
Is Faex (Yeast Extract) a Good Ingredient?
Rated Good as a humectant and conditioning agent rich in amino acids and saccharides that support hydration and a healthier-feeling barrier, with a generally gentle profile. While not backed by large clinical trials, cosmetic use shows consistent moisturizing benefits with low irritation.
What it does
Skin Benefits
Attracts moisture for a bouncier, well-hydrated feel and a replenished look. Also offers antioxidant activity to help defend skin from environmental stressors.
Where you'll find it
Uses in Skincare & Cosmetics
Common in hydrating serums, gel creams, and sheet masks for lasting moisture delivery; also appears in antioxidant toners and essences.
Before you use it
Safety
Generally considered low risk for irritation and suitable for daily use. Those with highly reactive skin should introduce gradually and stop if sensitivity occurs.