The Derma Roller is a double-ended titanium micro-needle. The larger end is embedded with 1080, 1.5mm needles designed for the scalp and hairline, the smaller end is with 540, 0.75mm needles designed for the eyebrows, to gently prick the skin open to help stimulate the hair follicles.
The Derma Roller is best used alongside The Brow Mask & Oil Hair Mask. This, gently, yet thoroughly can help stimulate growth by awakening follicles.