With Biotin, ProVitamin B5 & Amino Acids Strengthens & Conditions This strengthening conditioner is enriched with Biotin and ProVitamin B5, two powerful vitamins that strengthen, condition and promote natural hair growth even in the most damaged hair. A mix of eleven amino acids, the building blocks of proteins, are used to strengthen, repair and condition the hair shaft. With regular use, hair will look and feel thicker and healthier. Safe for colored and chemically-treated hair. Paraben and sodium chloride-free. pH balanced.