Hydrolyzed Silk Protein Powder | Silk Peptide Active

Overview. Silk has been treasured for millennia as the epitome of smoothness and luster — qualities that originate in fibroin, the structural protein of the silkworm (Bombyx mori) cocoon. YaoSynBio Hydrolyzed Silk (YS-013) is produced by controlled enzymatic hydrolysis of natural cocoon silk, breaking the high-molecular-weight fibroin into silk peptides and amino acids small enough to integrate readily into cosmetic systems. The ingredient is supplied as a white to light yellow powder (CAS 96690-41-4), combining natural-origin credibility with the performance of a modern functional biopolymer.

Mechanism. Hydrolyzed silk is rich in amino acids with excellent water-binding capacity, helping the skin retain moisture and reducing transepidermal water loss. On application it forms an ultra-thin, breathable protein film that imparts an immediate silky, velvety after-feel without tackiness or heaviness — a sensory signature that formulators rely on. In hair care, the peptide film smooths the cuticle, adds slip and shine, and provides effective anti-static and detangling benefits, making hair feel soft and manageable.

Applications. Recommended at 0.5%–5.0%, YS-013 is a workhorse across moisturizers, serums, sheet masks, essences and color cosmetics for skin, and shampoos, conditioners, hair masks and leave-on treatments for hair. It is particularly valued in premium "silk-touch" textures and in products where an elegant sensory profile is a selling point. Its long regulatory history supports worldwide use.