Our scalp care ball contains calendula extract, Centella asiatica extract. It can promote rapid hair growth, strengthen existing hair, prevent hair loss, and strengthen hair roots. Its application method is simple: 1. Thoroughly clean and dry the scalp before use. 2. Remove the lid and place the drum applicator over the head. 3. Roll the app over the desired area and apply a little pressure. And it can deeply awaken dormant hair follicles, promote the growth of new hair, and make hair healthier and thicker.