Color one hair blackening shampoo 350 ml Usage: Wear the glove inside the product and pour the product into your palm. Apply the product to damp hair by massaging from roots to ends. After waiting 10 minutes, rinse your hair with plenty of water. Product benefits: It helps blacken your hair with its herbal content. It does not flow or disperse and is practical to use. How to use: Using the glove included in the package, apply the entire package to dry and clean hair by massaging until it penetrates the hair roots. After waiting for 10 minutes, rinse your hair with plenty of water.