Crescina Stem vials: For topical cosmetic use, helps intensify the natural growth of hair. The core ingredient of Crescina Re-Growth is a combination of two amino acids, Cysteine and Lysine, which are basic components of hair keratin, and a special growth factor called Glycoprotein, which is able to promote cell activity (in vitro test) in the bulb cell to stimulate protein synthesis, especially o…