Pure biotin for hair growth - GRAY HAIR SOLUTION FOR MEN AND WOMEN - Healthy hair supplements (6 Bottles 360 Capsules) Catalase Catalase is an enzyme and a lack of it is involved in hair turning gray. As we get older, we make less catalase. In other words, lack of catalase causes the buildup of hydrogen peroxide, which in turn “bleaches” the hair and skin by blocking the production of the pigments that give skin and hair its color. Adding catalase can aid in helping to prevent discoloration. Folic Acid and Gray HairFolic acid is essential for many bodily processes. A deficiency of this vitamin may not only slow your hair's growth, but it can also cause your strands to turn gray. While gray hair that occurs with age or genetics cannot be reversed, hair that is gray because of this vitamin deficiency typically returns to its normal color once you increase your folic acid levels. Restore and prevent hair color loss Many factors, such as stress, aging and genetics can cause your hair to lose its color and turn gray or white.Vitamin B-5, or pantothenic acid, has a role in maintaining the health and color of your hair. Researchers explain that low vitamin B-5 is associated with graying of the hair. By increasing your B-5 levels, you may be able to bring some color back to your hair.