As we tested the root cover ups we looked at how well they went on to our hair, how they covered our roots and greys if they were easy to wash out and their value for money. Enter this TRESemmé root touch-up spray, which earned raves for covering and blending into dark tones. ColorWOW’s waxy root concealer has a devoted following thanks to the easy-to-use brush applicator, variety of shades, and waxy coverage that stays put until you wash it out. Even better, the powder comes in a compact with a built-in mirror and sponge applicator to make it simple to dab on anywhere. The shampoo and the conditioner from this Redken range are brilliant for day to day use, promising to revive luminosity in tired grey hair.

Katie Berohn is the Beauty Assistant at Good Housekeeping, Woman's Day and Prevention magazines, all part of the Hearst Lifestyle Group.

That being said, there are products out there that will work if you have brunette or black hair, you just may need to put in the time and work to get your desired shade. Today’s formulas are better because the spray cans are regulated and use propellants such as hydrocarbons and compressed gases like nitrous oxide that do not deplete the ozone layer, a smart move for beauty in anyone's book. For something more buildable, consider Unite GO365 Hairspray which lets you choose the level of hold to apply. We didn’t need to wait for it to dry, although we did find that to fully coat our roots, we had to spray it on the hair a couple of times.Generously coat dry hair in a layer of the stuff, leave for 20 minutes then rinse off and follow with your usual hair routine. Created by famed New York City salon owner Rita Hazan, this temporary spray is able to cover large areas of hair and tints sparse areas on the scalp, making hair appear fuller.