It's not a good idea to mix 20 volume developer with purple shampoo. Mixing developer with purple shampoo won't help you change your hair color, nor will it ...

You can! Developer itself has some kind of a lightening effect and therefore you can lighten your hair with it. Volum 20 developer can lighten up your hair one ...

You can! Developer itself has some kind of a lightening effect and therefore you can lighten your hair with it. Volum 20 developer can lighten up your hair one ...

You should leave 30 volume bleach in your hair for no longer than 15 to 30 minutes. The exact amount of time depends on your natural hair color and your ...