At Viviscal, we understand the science of healthy hair growth from the inside out. Viviscal Strengthening Conditioner is formulated with hair building blocks Biotin and Keratin, and fortified with Marine Collagen and Seaweed extract. It delivers nourishing hydration without weighing hair down. This moisturizing formula conditions and strengthens leading to fuller, thicker, healthier looking hair with reduced breakage*. For best results, nourish your hair from within with Viviscal Hair Supplements.