Hathlevas ppd free hair colors are: 100% pure & natural no side effects ppd free no chemicals or addictives no ammonia – no barium natural grey coverage how to use mix powder in a warm powder with lemon juice. make an applicable paste and keep it for 3 to 4 hours. apply the paste thoroughly from roots to tips of the hair. leave it for 3 to 4 hours till it dry. cover your hair with a shower cap and wrap it with a towel. keeping for longer time will result in darker color. rinse thoroughly with warm water.