Pure plant extracts. Thicken Strength Revive fine, limp, thin hair. For thicker, stronger hair. Energize lifeless hair with Revitalizing Shampoo. This invigorating, purifying shampoo helps to eliminate build-up from hair and scalp to encourage healthy hair growth. Leaves hair visibly thicker and fuller. Continued usage improves hair's thickness, texture and strength, without stripping essential oils. Designed for both men and women, Thicker Fuller Hair is formulated with Cell-U-Plex, a synergistic blend of pure plant extracts, vitamins and protein that infuse the hair shaft to thicken, improving hair's overall vigor. A.R.L. does not engage in animal testing.