Rosemary Oil with Dermaroller - Strong Formula with Biotin & Natural Oil (Skin & Hair Care) 50mlRosemary oil is a powerful herbal mix that is beneficial for the hair, body and skin with its vegan content. Stimulates blood circulation in the scalp and helps prevent hair loss. Thanks to the dermaroller, it is even more effective against hair loss, thinning hair and for stronger hair growth. Also contributes to stronger beard growth. Dermaroller helps for faster blood circulation and that the oil can better reach the hair follicles to nourish them.