This product is very effective, prevents hair loss, promotes hair growth and gives you a silky smooth hair. Directions for use: 1. Wash hair with shampoo and dry your hair 2. Spray Hair Growth Serum to the root of hair evenly, Two times a day(morning and evening), spray 1ml in one time, (spray 5-6 times) Increase or reduce the dosage according to the specific condition 3. If possible , massage for several minutes. 4. Leave it to dry for several hours before you do any thing to your hair.