Prell Biotin + Rosemary Strengthens & Thickens Color Safe Shampoo & Conditioner for Fine, Damaged Hair 13.5 fl.oz

Prell Biotin + Rosemary Shampoo is strengthening and thickening system that combines two powerhouse ingredients to stimulate keratin production and fortify thin hair. DIRECTIONS: Wet hair and massage onto scalp. Wait 2-3 minutes. Rinse. For best result, use with Prell Biotin + Rosemary Conditioner. Prell Biotin + Rosemary Conditioner is a strengthening and thickening system that combines two powerhouse ingredients to stimulate keratin production and fortify thin hair. . DIRECTIONS: Wet hair and massage onto scalp. Wait 2-3 minutes. Rinse. For best result, use with Prell Biotin + Rosemary Shampoo.