Dermarolling is a form of microneedling that involves using a small rolling device covered in tiny needles to puncture the skin. The purpose of dermarolling is to promote collagen production and improve the appearance of scars, wrinkles, and other skin concerns. Although dermarolling is generally considered safe, there is some concern that it may damage hair follicles.
The needles on a derma roller range in size from 0.25mm to 2.5mm. Needles longer than 1mm are not recommended for at-home use as they can cause pain and injury. When used correctly, dermarolling should not damage hair follicles. The needles only penetrate the top layer of skin, called the epidermis, and do not go deep enough to reach the hair follicles located in the lower layer of skin, called the dermis.
However, if you roll too hard or use a needle that is too long, you could puncture your skin and damage your hair follicles. This would cause inflammation and scarring around the hair follicle, which could lead to permanent hair loss. It’s important to be very careful when using a derma roller and never use more force than necessary. If you’re unsure about how to use a derma roller safely, consult with a dermatologist or other skincare professional before attempting it at home.