Promote hair growth: Titanium microagujas can open small channels in the skin in a short time, effectively penetrate skin to receive nutrients, activate the natural healing process of the body and, therefore, produce collagen, which is important For hair growth and help skin and absorption. Of products for the growth of the beard. Improves the skin: when using Derma roller, the receptors are stimulated in the skin, allowing the ingredients for the care of the skin to penetrate better and are better absorbed.