Thanks to the special formula of our shampoo, it helps to cover the gray hairs. It does not cause bleeding or staining. Wear the glove inside the product and pour the product into your palm. Apply the product to damp hair by massaging from root to ends. When the application is completed, leave it on the hair for 10 minutes. After waiting, rinse with plenty of water. Then you can rinse with your shampoo 2 or 3 more times. Avoid contact with eyes - in case of contact, rinse with plenty of water. If you experience any unexpected effects, consult a doctor.