Unique glycoprotein isolated from natural silk produced by the silk worm Bombyx mori. Has strong affinity to keratin and forms a natural semi-occlusive, protecting anti-wrinkle film on the skin surface imparting an immediate, long lasting, smooth, silky feeling. Sericin provides excellent film-forming, conditioning, and anti-wrinkle properies. It reduces significantly transepidermal water loss and skin irritation. Smoothing and moisturizing activities that persist even after washing leaving the skin or scalp silky and smooth.