This Puri Hair compound is present in many foods, especially Puri Hair most raw fruits and green vegetables. MSM provides sulfur that is required for healthy collagen and keratin. So what about hair growth shampoos? A healthy scalp free of fungus and bacteria is the ideal environment for hair to grow. However, it cannot do much in the way of promoting hair growth. Hair is already dead, otherwise it would hurt when you cut it. Shampoos can cause damage, however, leading to Puri Hair breakage.