Try: Lush Henna Hair Dyes, $25.95

Stop squinting at label ingredients and cut out any lingering doubts by giving henna a try. Lush's 100 percent natural blocks are made from pressed henna, cocoa butter other natural pigments like ground coffee and lemon juice to dye hair sans chemicals. Simply break up the blocks and steep them in hot water until they have a batter-like consistency. Coat your hair and get ready to let it set for two to four hours.