To permanently lighten or add a bright colour to dark locks, you need to bleach the hair first so it's light enough to take the colour.
Celebrity colourist Josh Wood indicates that while previously bleaching was a harsh and damaging process, advancements in colour technology have made it less abrasive.
Josh has a range of hair glosses that are semi-permanent conditioning colour treatments you can use in the shower to enhance dark hair without bleaching.
If you're looking for extreme colour contrast, bespoke colour hair extensions or clip-in extensions are recommended for adding vibrant hues.
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