. Benefits: Anti-breakage. Biotin infused. Luxe lather. For all hair types. Color + keratin safe. Free of sulfates, parabens + phthalates. Features The One Signature fragrance: ambrette seed, magnolia, pear water, night violet, orris butter, new caledonia sandalwood + white amber. Key Ingredients: BIOTIN FUSION COMPLEX: Rich in vitamins that support healthy hair like amino acids and biotin, this powerhouse complex helps keep hair strong and reinforces weak strands for hair longevity and vitality.. BIOTIN: Also known as Vitamin B7, this essential nutrient helps to stimulate keratinproduction, promote healthy hair and enhance shine.. AMINO ACID BLEND: This blend deeply moisturizes and strengthens strands. It alsohelps to repair surface damage for healthier, more resilient hair.. Research Results: Scientifically tested to reduce breakage. Up to 58% less breakage*. Up to 2x stronger hair**. Based on breakage test of Kristin Ess Strengthening shampoo and conditioner together as a system vs untreated hair..