It's bleach, it will effect your natural color [SEP] It's bleach... It claims it won't change your natural color underneath but I never lightened my hair, then dyed it dark red. After using this product my hair is lighter than my roots! Not only did it stink but this listing is very misleading. One of the ingredients is bleach. I'm honestly not sure what I'll do with this orangey hair that is lighter than the roots coming in... The whole point was to stop dying my hair. Not impressed.