KNF Horse Formula Shampoo 16 oz. Due to its select components of British origin, such as soy sulfopeptides, which regulate hair nutrition and growth. Amino acids derived from tyrosine, arginine, ornithine, and citrulline serve as precursors to protein and pigments of melanin, contributing to strengthening. Through daily use of the shampoo, it prevents hair loss, stimulates hair growth, helps maintain color, and enhances its appearance.