13. Become one with the conditioner

If you’ve ever used at-home hair colour, you know the tiny tube of conditioner that comes in the box is the holy grail of hydrating products. Now Clairol is letting you buy it separately. The new box-free formula comes with histidine, which prevents the copper found in water from ruining your colour. Score. Clairol Nice’n Easy CC+ ColorSeal Conditioner for Beautiful Brunettes, Brilliant Blondes and Radiant Reds ($6 each, at drugstores and massmarket retailers)