I let my daughter dye her hair from time to time.This weekend she did the red high lights to her black hair.It looks good. My daughters hair is short so there is always some dye left over. In a need of not wanting to be wasteful her friend who spent the night calls her dad and asked if it is ok if she gets high lights in her hair. He says "sure thing".He failed to ask what color.This girl has beautiful long blonde hair.She is now grounded for a week.Never as a parent go with the "sure thing" if you don't know more details. Guess she will be looking at those high lights alone for awhile.