Please read the instructions before using so that you achieve the best color result. Wear plastic gloves and a cape to avoid any stains Long and thick hair may require 2-3 packs to apply for the first time Wait for three weeks after perming, highlighting or bleaching before coloring. Before coloring hair should be clean and dry. Lighter hair color always takes color better whilst dark hair needs bleaching first. Take an allergy test 24 hours before using. Avoid using conditioner or oil before coloring.