New Delhi, Sept. 23 -- It might sound like something out of a science fiction movie: using a small, needle-covered wheel to regrow your hair. But the derma roller isn't magic; it's based on a solid scientific principle called microneedling. This process has been used in dermatology for years to rejuvenate skin, and now, its benefits for hair are becoming clear. So, how exactly does creating tiny wounds in your scalp lead to a fuller head of hair?

How does microneedling wake up hair follicles?

When you roll a derma roller over your scalp, its tiny needles create controlled micro-injuries. Your body perceives these as wounds and immediately launches its natural healing process. This is where the magic happens.

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