Hydrolyzed Soy Protein Extract
AKA “Soy Protein Hydrolysate”
Synthetic
Ingredient Facts
Hydrolyzed soy protein extract
AKA: Soy Protein Hydrolysate
Synthetic · Humectant · EWG: 4
Plant-Derived Synthetic
Humectant
Occlusive
Skin Conditioner
Synthetic
Clean
Soy protein helps condition and strengthen skin, leaving it feeling soft and hydrated. Contains soy—skip if you have a soy allergy.
CAS #
68607-88-5
Form
Liquid
See origin →
Functions
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Humectant
A moisture magnet. Pulls water from the air and deeper skin layers up to the surface to keep skin plump and hydrated.
Film Forming
Creates a physical seal on skin to lock moisture in and keep irritants out. The "slugging" ingredient — barrier protection.
Locks in moisture
Traditional Use
Soy fermentation has been central to Asian beauty traditions for centuries. Modern hydrolyzed soy protein extracts were developed to isolate and concentrate bioactive compounds from soy for enhanced skin benefits and antioxidant properties.
Skin Types
●all-skin-types
Best For
Dryness
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Yes
Verified Feb 2026
Data: CosIng · EWG · CIR