Calling all curly girls! Give your flat or fine hair some major flare with the Long Hair Strong Hair Shampoo. This sulfate-free shampoo gently cleanses and moisturizes dry hair for workable, long hair. For best results, pair the Long Hair Strong Hair Shampoo with the Long Hair Strong Hair Sulfate-Free Conditioner. This Shampoo & Conditioner system enriched with Amino acid strengthening complex seal split ends by 90%. Amino Acid Strengthening Complex works both inside and outside hair fibers. It penetrates within the cortex, merging within hair bonds to strengthen its structure, and acts on hair cuticles, polishing them to remove any frizz. This. Makes hair more supple, easier to style, and able to hold styles for longer. Globally, Suave does not test on animals and is certified cruelty-free by PETA.