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Experts reveal everything about purple shampoos

three women holding scissors and brush

For blonde hair, purple shampoo is a blessing. But how often should you use it to reduce unwanted brassiness? Experts say there is a right way to use toning products to brighten your hair without damaging its integrity.

The best purple shampoo will tone gray, blonde and silver hair colors. It removes yellowish, dull hues that may appear between salon visits and after exposure to the sun. However, these shampoos can dry out so be careful not to use too much. “Invest in great purple shampoo if you don’t want your blondes to turn brassy,” Adam Reed, legendary stylist and editorial ambassador of L’Oreal Professionnel. “It will keep your color vibrant and prevent any brassiness.”

Reed recommends that you avoid using these products every single day to prevent product buildup. We’ve surveyed the experts to find out how purple shampoo works and how often it should be used.

The type of purple shampoo that you’re using will determine how often you should use it. Experts agree that one use per week is sufficient. Anabel Kingsley, brand president and trichologist at Philip Kingsley says that you should use the best shampoo and conditioner to your hair texture for daily washing. Alex Brownsell, color specialist and founder of BLEACH London recommends that you use a toning shampoo or conditioner every second or three washes to keep your hair cool.

What is Purple Shampoo?

We now know how often purple shampoo should be applied. Let’s talk about what it is and how it works. Kingsley explains that blonde hair can become brassy over time due to free radical oxygenization. This can be reversed using science of color theory. Kingsley continues, “By depositing opposite purple and blue colorants onto hair shaft, yellow, and orange tones are neutralized and removed any brassiness.” Brownsell adds that these shampoos can be used on very light or pre-lightened hair. They can be used on highlights, balayage, and on certain sections of blonder hair such as balayage with money.

What happens if you use purple shampoo too often?

Although the results can be impressive, you should not overdo it when using purple shampoo. Kingsley warns that too much purple shampoo can cause hair to look purple or blue. This is not the blonde hair colorist worked so hard to create. As we’ve already mentioned, some purple products can dry so make sure to use a hair mask to moisturize your hair.

Follow the directions on your purple shampoo. Different formulas may contain different amounts. Brownsell says that soaking your hair in water is important to ensure the shampoo is evenly distributed. After this, apply conditioner to your hair and dry it with a hair dryer. This will give you shiny, icy results.


  • Philip Kingsley Pure Blonde Booster Weekly Shampoo $40

Kingsley says, “Our shampoo has the optimum amount of violet micropigments to brighten hair while also smoothing and repairing damage. It also replaces lost keratin.”

  • Pureology Colour Fanatic Top Coat in Tone Purple, $35

This product is designed to be used after shampooing to tone blonde hair. It has purple pigments that neutralize warm tones, oat milk, camellia oils, and vitamin E to soften hair and increase shine. Let it sit for between 5-10 minutes, then rinse.

  • L’Oreal Professionnel Serie Expert Silver Shampoo $16.93

Reed says, “L’Oreal Professionnel Silver shampoo is my absolute hero. I have been using it on my clients for many years.” The formula is enriched with purple pigments, magnesium, and nourishing for hair fibers.

  • Redken Blondage High Bright Treatment $31.63

The brand’s brightening complex helps to lift dull and darkened colors with this clever pre-shampoo spray. Spray all over your hair and let it sit for five minutes before shampooing.

  • Bleach London Silver Shampoo RRP $12

Brownsell says that there are a variety of purple shampoos available to suit different blondes. “Our Silver Shampoo deposits an almost ashy-purple tone, which is perfect for blondes with white hair and ashy brown eyes.”

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