Our Batana hair Care essential oil is carefully blended from rosemary oil and glycerin. Designed specifically to support thicker hair and enhance the volume of hair. The usage method is extremely convenient: 1. Clean and dry the scalp. 2. Apply an appropriate amount of the product evenly to the scalp and gently massage. 3. Apply the product for several hours (preferably overnight) and then wash it off with shampoo. And it can support hair growth and help hair grow longer.