I strongly advise a hair strand and skin test first of all before trying out any product!! My little sister is a hair dresser and ive heard some real horror show stories about people who's scalps burn and they can never grow hair again on their head!! Are you allergic for sure?? You should always do a skin test before every application, even if you have used the same product before!! I dye my hair every month and it still really scares me!! thats the only advice i have really!!