Revi Technology Scalp Boosting Needle Roller, ViveLabPRODUCT INFORMATION This device is designed for scalp and hair loss care, featuring 144 micro needles that stimulate the scalp to enhance blood circulation and significantly improve the absorption of scalp ampoules and nutrients. The fine needles create microchannels on the scalp, allowing active ingredients from scalp treatments to penetrate deeply into the hair folliclesdelivering faster and more potent nourishment than manual application. It helps