If you happen to’ve ever left a hair coloration appointment in worry that you simply hair seems a contact too synthetic, it’s possible you’ll take consolation within the idea of the “three-wash rule.” Reality for some, mythos to others, the final idea is evident: new hair dye takes time to settles in. “After we put coloration on our hair, it’s pigmented, and when you begin washing the colour transforms the construction of the pure hair,” explains movie star hairstylist Dimitris Giannetos. “Some colours are extra crimson, so that they’re going to carry the crimson undertones, whereas some colours are extra ashy. If you begin washing and the dye settles, you will maintain the tones extra aligned together with your pure coloration.” This mixing is probably going aided by the results of time, too. “Relying on the colour, it might look a bit extra settled after a pair weeks just because your pure has grown in a little bit,” says movie star colorist Emaly Baum. “That is particularly the case for highlights. It provides a little bit extra pure depth on the root.”

As a result of there’s worth in distinction, it is price noting that movie star colorist Jenna Perry disagrees with the premise of the three-wash rule, as does Baum—however that is to not say she does not perceive it. “Personally, I feel that coloration at all times seems greatest proper after it’s completed—possibly I’m biased!” says Baum. “I feel usually, after a recent coloration, you’re simply not used to seeing your self with vivid highlights or no grays and even simply your pure root. It might probably take a number of days after getting your coloration completed to actually get used to seeing it within the mirror.”

Whatever the second you fall on your new hue, upkeep is crucial. “Correct hair cleaning is essential to take care of the vibrancy of your hair,” says Perry, citing the perils of arduous water, which may result in dry hair for all and brassy hair for blondes. “Harsh water also can make your coloration fade quicker and even add a very dense yellow inexperienced hue,” says Baum. “If this can be a concern I’d suggest getting a bathe head filter.” Merchandise matter, too. Perry reaches for all issues Olaplex—notably the Volumizing Blow Dry Spray and No. 7 Bonding Oil—whereas Christophe Robin’s Color Defend Shampoo is Baum’s go-to for color-treated lengths. “This can be a low lather shampoo that leaves your hair feeling clear however hydrated,” she says. “For conditioner I like Davines Vegetarian Miracle Conditioner—it makes hair really feel gentle and wholesome immediately—and after the bathe I at all times inform my shoppers to make use of a leave-in like Reverie Milk. Giannetos depends on Garnier Fructis Hair Filler Coloration Restore Shampoo and Conditioner for smoothness, shine, and coloration upkeep—and even with the potential advantages of the three-wash rule, warns towards over-washing, a feat made simpler with the assistance of Morrocanoil Dry Shampoo.

Take into account the three-wash rule a free timeline for permitting your new shade sink in slightly than a tough and quick dictate. (In spite of everything, most magnificence “guidelines” include a caveat.) Strategic coloration care, nonetheless? That is a non-negotiable.