A derma roller for hair growth works by using tiny needles to create micro-injuries on the scalp. These micro-injuries stimulate the body's natural healing process, which triggers an increase in collagen and elastin production. These proteins are essential for healthy hair growth, as they help to anchor hair strands to the follicle and keep them hydrated.
Derma roller can also improve the absorption and effectiveness of other hair care products, such as topical medications and hair loss serums. By creating tiny punctures in the scalp, the derma roller can increase the absorption and penetration of these products, allowing them to work more effectively.
Overall, a derma roller for hair growth can be a useful tool in promoting healthy hair growth and thickness, as well as improving the effectiveness of other hair care treatments.