New Delhi, Sept. 9 -- Using tiny needles on your scalp may sound scary, but this method is getting more attention for helping with hair loss. A derma roller makes a controlled micro injury to your scalp, encouraging the activation of natural hair growth factors. This can lead to healthier and thicker hair. It increases blood flow and collagen production, creating a better environment for hair growth. If you want to try it but don't know how to start, this guide on how to use derma roller, will give you step-by-step instructions.

How do I choose the right derma roller?

Your first step is selecting the right tool, and the most critical factor is the needle size. For home use, it is recommended that you never exceed 1.0 mm; however, for be...