HOW OFTEN SHOULD PURPLE SHAMPOO “EXPERT GUIDE”

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For blonde hair, purple shampoo is a godsend, but how frequently should it be used to remove brassiness? The experts claim that there is a "right" way to utilize these toning products so that color can be brightened without sacrificing the integrity of your hair.

The best purple shampoo will lighten blonde, silver, and gray hair by eradicating the dull, yellowish tones that can develop between salon visits and after exposure to sunlight. It's important to avoid overusing these shampoos because they can be drying.

According to Adam Reed(opens in new tab), renowned hairstylist and editorial brand ambassador for L'Oreal Professionnel, "my biggest advice for blondes turning brassy is to invest in a great purple shampoo. It will keep any brassiness at bay and allow the color to really pop."

Reed advises against using these products on a daily basis to prevent product build-up. We polled the experts below to learn more about how purple shampoo works and how frequently you should use it.

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HOW OFTEN SHOULD PURPLE SHAMPOO BE USED? A SCIENTIFIC GUIDE

Depending on the kind of purple shampoo you're using, the answer to the question "how often should I use purple shampoo" will change. However, as a general rule, the experts concur that once per week ought to be sufficient. Anabel Kingsley, brand president and trichologist at Philip Kingsley, says, "We recommend using the best shampoo and conditioner for your hair texture for daily washing, as well as a weekly blonde boosting treatment with a specialist purple shampoo." This is seconded by color expert and BLEACH London founder Alex Brownsell(opens in new tab), who advises "using a toning shampoo and conditioner every second or third wash to maintain a cool color."

WHAT IS PURPLE SHAMPOO?

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Now that we know how frequently to use purple shampoo, let's talk about what it is and how it functions. According to Kingsley, the oxidation caused by free radicals causes blonde hair to turn brassy over time. The science of color theory is used to undo these effects as a remedy. Kingsley continues, "Yellow and orange tones in the hair are neutralized, removing any brassiness, by depositing opposing purple and blue colorants onto the hair shaft. According to Brownsell, "These shampoos are suitable for pre-lightened or very light blonde/white hair." They can also be applied to highlights, balayage, or particular blonder sections of the hair, such as balayage with a money piece.

WHAT HAPPENS IF YOU OVERUSE PURPLE SHAMPOO?

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While the results are impressive, purple shampoo has the potential to be overpowering. "If you lift your hair too much, it can become much brighter or cooler than your desired shade," warns Kingsley. Not only that, but if you use purple shampoo too frequently or for too long, "you run the risk of making hair appear purple or blue in tone," Kingsley adds. Which is most likely not the blonde hairstyle your colorist painstakingly designed in the salon. Furthermore, as previously stated, certain purple products can be drying, so it's critical to follow up with one of the best hair masks to nourish strands.

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HOW LONG SHOULD YOU USE PURPLE SHAMPOO?

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It's important to ask how often you should wash your hair with toning products, as well as how long you should leave it on for. Always read the label on your purple shampoo because different formulas contain varying amounts of violet pigments. "A good tip is to make sure your hair is wet so that the product is distributed evenly," Brownsell suggests, "then lather the shampoo into your strands and leave the product in your hair for five minutes." For glossy, icy, and refreshed results, apply conditioner before drying locks with your best hair dryer.

THE TOP PURPLE HAIR PRODUCTS TO TRY RIGHT NOW

RRP: $40/£25.50 for Philip Kingsley Pure Blonde Booster Weekly Shampoo

"Thanks to a unique combination of actives, our shampoo contains the optimal level of violet micro-pigments to brighten light hair while also smoothing the cuticle, repairing damage, and replacing lost keratin," says Kingsley.

RRP: $35/£29.90 for Pureology Colour Fanatic Top Coat and Tone Purple

This post-shampoo toner is designed to make light work of toning blonde hair (opens in new tab). Purple pigments help to balance out warm tones, and oat milk, camellia oil, and vitamin E soften and shine the hair. Allow 5-10 minutes before rinsing.

RRP: $16.93/£14.85 for L'Oréal Professionnel Serie Expert Silver Shampoo

"L'Oréal Professionnel Silver Shampoo is my absolute hero," Reed says, "and I've been using it on my clients for years." The formula, which contains purple pigments and magnesium, subtly lifts your color while nourishing the hair fiber.

RRP: $31.63/£29.50 for Redken Blondage High Bright Treatment

Thanks to the brand's brightening care complex, this clever pre-shampoo spray with vitamin C helps lift darkened and dulled colors. Spritz all over hair and leave for five minutes before shampooing.

RRP: $12/£7 for Bleach London Silver Shampoo

"We have a variety of purple shampoos to suit different blondes," Brownsell says. "Our Silver Shampoo deposits an ashy-purple tone that's ideal for white blondes and ashy blondes."

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Conclusion:

You now know that purple shampoo can be used on highlighted brown hair but not completely brown hair. If you have highlighted blonde sections, you also know how to use purple shampoo to reduce brassiness. We hope you found this article useful as you work to perfect your hair color!