It's a Wig Iron Friendly Sythertic Fashion Wigs - RIVER WAVE*Please read the product features for more information Care Instruction 1. Detangle hair gently by hands or comb before washing and sleeping. 2. Brush straight hair from up to down. 3. Comb curly hair gently with your fingers from top to end. Do not brush. 4. Wash and care the hair regularly. Put mild shampoo to cool water and swing the hair till clean, rinse thoroughly. 5. Blot out excess water with towel, let hair to dry naturally. Do not expose to sun. 6. Use hair conditioner after washing the hair. Deep care the hair extensions once a week Directions HOW TO WASH 1) Wash the hair by shampoo and conditioner with softener. 2) Don't use hair drier,it cause the hair dry and tangled. 3) Don't use fine-tooth brush or comb,it cause the hair shedding. 4) We suggest wash twice per week.