Looks21 has given millions of men and women the look and confidence of a full, thick head of hair and a more youthful appearance.- Whether you have thin hair, a wide parting, or hair loss at the crown, Looks21 will transform your hair for a completely natural look.- Looks21 Hair Fibers resists wind, rain and sweat but removes easily with shampoo.- Looks21 Hair Thickening Fibers are made with multi-tone adapt coloring system, which helps the fibers blend with your hair seamlessly even if your own hair shade is slightly different. Pick a color that is a closest match to your own hair.- Looks21 is not an animal sourced keratin hair building fiber, its a 100% Natural Plant sourced Vegan & Cruelty Free product.