Q How can I correct a DIY dye disaster?

Ideally, permanent colour mishaps need to be fixed by your hairdresser. ‘Removing colour is one of the most technically difficult services,’ says Katie. But if you’re desperate, there are at-home colour removers available such as Revolution Pro Hair Colour Remover, £9.99, revolutionbeauty. com. Follow the pack’s instructions, and don’t be surprised if orange tones creep through. Follow with a nourishing hair mask. Or, for a fast fix if you’ve tried to go lighter and it’s turned a bit orange, apply a purple-toned shampoo and leave for 30 minutes to neutralise the brassiness. Try Shu Uemura Art of Hair Yubi Blonde Anti-brass Purple Shampoo, £31, lookfantastic.com. Semi-permanent colour is easier to remove. ‘As long as it has been used correctly, it will wash out,’ says Michael. ‘The only problem is if you’ve used it on top of highlights or porous hair, as colour can fall into the cortex of the hair and stain. In most cases, applying anti-dandruff shampoo to dry hair and leaving for 10 minutes before shampooing will do the trick.’ We like Head & Shoulders Dermax Pro Boosting Strength Shampoo, £6, Boots.