Glycine max (soybean) polypeptide consists of peptide fragments derived from soy proteins and is used in topical products. It's applied for skin conditioning and to refine the look of texture, though evidence for firming or age-related claims remains limited.
A soy-derived peptide that helps refine skin's texture and smoothness.
Category
Skin Conditioning, Tone/Texture
Type
Peptide
Ratings
Overall Rating
Fair
Comedogenic Risk
None
Not typically evaluated for comedogenicity — no standardized rating available.
Our take
Is Glycine Max (Soybean) Polypeptide a Good Ingredient?
It's Fair because evidence for firming or anti-aging outcomes is limited and effects can be inconsistent from product to product, and soy-sensitized individuals may be at risk of reactions, which together hold it back from a better rating.
What it does
Skin Benefits
May soften and refine the look of skin texture for a smoother appearance. Evidence for firming or age-related effects is limited, so results can vary.
Where you'll find it
Uses in Skincare & Cosmetics
Featured in serums, moisturizers, and eye creams aiming to improve skin feel. Also used in sheet masks and lotions as a conditioning peptide component.
Before you use it
Safety
Usually well tolerated, but those with known soy allergies should use caution due to potential sensitization. Mild irritation is possible in sensitive skin. No widely recognized ingredient-specific regulatory restrictions at standard cosmetic use levels.