describe Net weight: 250ml Shelf life: 3 years characteristic 5 minutes to dye your hair. Easy to dye and clean, Keep hair dyed quickly for a long time. Fashion! Relax. Convenient! Be different from others! Warning: 1. Avoid contact with eyes. 2. For external use only. Please keep it out of children's reach. Instructions for use of hair dye shampoo: Please do a skin test before dyeing your hair. If there is no problem, then start dyeing your hair. Please make sure that your hair is dry when you start dyeing it. Don't add water when dyeing your hair. After dyeing your hair, you can rinse it with water. For black, it usually takes 5-10 minutes, and then the hair is washed with water. Note: After applying the hair dyeing shampoo to your hair, massage for a few minutes. Don't scratch your nails to avoid hurting your scalp. Please massage your hair with your fingers. note: Please have a skin test before dyeing your hair. Please refer to the instructions on the box for details. Packaging includes 1 * Hair dye shampoo