The Toppik Hair Building Made of colored keratin protein, fibers blend in imperceptibly with existing hair strands to give the appearance of full, thick hair right away. fills in thinning areas instantly. hides the loss of hair makes thin hair appear incredibly full and thick. Excellent as a touch-up for the roots between colorings For long-lasting effects in any situation, resist wind, rain, and perspiration. Components: Ingredients: DMDM Hydantoin, ammonium chloride, silica, keratin, [+/-: Green 3 (CI 42053), Red 33 (CI 17200), Yellow 5 (CI 19140), Yellow 6 (CI 15985), and Orange 4 (CI 15510). Green 6 (CI61565), Green 5 (CI61570), Red 22 (CI 45380), and Blue 1 (CI 42090)] Instructions: Instructions: Suitable for both genders. Apply to dry hair. Shake well into areas that are becoming thinner. To spread out the fibers, gently pat your hair. As usual, style. For