If you're dealing with previously coloured hair and concerned about your roots, now might be the right time to experiment with at-home touch-ups — but cap things there. "I suggest applying [colouring products] only on the new regrowth that you can see (part and hairline) and waiting for a professional to colour the interior." While a full-blown hair transformation may not be your best option, you can at least maintain what you already have.
What to Try: Clairol Root Touch Up Hair Dye (£6)