It is advisable to empty the entire contents of the Indica Easy Hair Color – Natural Black sachet into your gloved hands and directly apply it onto dry, unwashed hair. Apply the hair colour on the visible grey hair and gently massage for 2-3 minutes till they get covered. Leave the hair colour on for 10 minutes before rinsing the hair thoroughly with water. Not advisable to apply a shampoo. Once opened, use the entire sachet. Do not store any left over product.