A dermaroller for hair growth, a handheld tool with tiny needles, is used to stimulate hair follicles and promote hair growth. For example, a user would gently roll the dermaroller over their scalp, creating micro-injuries that trigger the body's natural healing process.
Dermarollers have gained popularity due to their potential benefits, such as increased blood flow, reduced inflammation, and improved absorption of hair growth products. Historically, microneedling, the technique used by dermarollers, has been employed for decades in cosmetic treatments.