Colouring your hair with permanent or semi-perm colour will change the colour of your hair. You will need to decide when to use John Frieda® Colour Refreshing Gloss Cool Brunette again to get the colour and shine effect you desire. You can use this brunette hair gloss anytime between colour applications. Make sure you have one hair washing after using this brunette hair gloss before you do permanent colour. The shine enhancers may interfere with your colour.