What it is
Glycosaminoglycans are long polysaccharide chains, such as those related to hyaluronic acid, that are naturally part of skin's extracellular matrix; hydrolyzing them yields smaller, more soluble fragments. In sunscreens these fragments serve as humectants that attract and hold water and as skin-conditioning agents that can leave a smooth, hydrated surface feel. The lower molecular weight is intended to improve solubility and spread within the formula.
Safety & warnings
Generally well tolerated and used at low concentrations as a moisturizing additive, with low irritation potential and no recognized fragrance-allergen concern.
Origin & sourcing
Can be of animal or biotechnological origin; the parent glycosaminoglycans are obtained from biological sources or fermentation and then hydrolyzed into smaller fragments.
Questions everyone asks
How do hydrolyzed glycosaminoglycans help the skin?
They act mainly as humectants, drawing in and holding moisture, and as conditioning agents that help leave the skin surface feeling smooth and hydrated.
Are hydrolyzed glycosaminoglycans related to hyaluronic acid?
Yes, hyaluronic acid is one type of glycosaminoglycan, so these hydrolyzed fragments belong to the same broad family of skin-hydrating sugar molecules.