Silk Protein Buono Antiossidante Anti-age Silk Protein description Protein substance (also called sericin) formed by converting silk, which is the soft, lustrous thread obtained from the cocoon of the silkworm. Silk protein can have water-binding properties for skin. However, whether the protein applied to skin is derived from animals or plants, the skin can’t tell the difference. There is a small amount of research showing silk protein may have topical antioxidant properties. Related ingredients: Sericin