Microneedling pen is used to stimulate collagen production, remove the wrinkles, and improve overall skin texture.Microneedling pen can also be used on the scalp to stimulate hair growth and improve the overall health of the hair. Paired with the specially formulated hair growth serums, Microneedling Derma Pen offers a comprehensive approach to tackling hair loss and thinning hair. It is also used for beard growth, too. Very popular in the beard club.