The issue I have with XXL is it contains a huge amount of sillicone which isn't a problem, unless you use straightening irons over 200 degrees in heat. Then the sillicone hits it's boiling point and melts inside the hair. Then nothing can ever get the stuff out – not even bleach.

Take one of the lower sections of hair, and paint the dye in a sweeping motion (as if you’re using a paintbrush) from the middle to the bottom of your hair, completely avoiding the part of your hair from the roots to the ears. Please note: ColourB4 Ultimate will help to remove unwanted colour and lighten the hair, however depending on the condition of your hair, and if it has previously been coloured it may not completely remove the colour.

The Scott Cornwall Decolour strips out all kinds of permanent hair dye and you can reapply hair colour immediately.

This picture is just after I have finished applying the remover, as you can see it is already working and my hair is lighter.Be extremely careful when bleaching your hair. Bleach can cause nasty burns, so make sure you cover yourself with an old towel and always wear plastic gloves. Once these bonds or links have been dissolved, the artificial colour molecules have nothing to hold them in place and since they are smaller now, they can easily get out of the hair shaft through the cuticle. Some people found that they could leave their hair that way after de-colouring it. The remover works evenly without leaving any blotches and uneven coloured spots. But if you are not comfortable with the final colour, you can use a dye immediately after. What we like about it:

It’s free of ammonia, bleach and other harsh chemicals. So it doesn’t dry out your hair or make it brittle. This means that you can safely re-colour your hair immediately after de-colouring it.Apply a barrier cream like petroleum jelly to your hairline before you die your hair to prevent the dye colouring your skin.