Brassiness. The eternal enemy of blonde, silver, and highlighted hair. You leave the salon with cool, icy tones, and two weeks later your hair looks like you soaked it in orange soda. Enter purple shampoo — the blonde's best friend. Here is everything you need to know about keeping brass at bay.
How Purple Shampoo Works (The Science)
Remember the color wheel from art class? Purple is opposite yellow on the wheel. This means purple neutralizes yellow tones. When your blonde hair starts going brassy (yellow/orange), purple shampoo deposits violet pigment that cancels out the warmth.
It is not dye — it is color correction. And it is temporary, which means you need to keep using it to maintain results. Purple shampoo is just one part of a complete color maintenance routine — see our guide on how to make your hair color last for the full strategy.
The violet pigments in purple shampoo work on the surface of the hair shaft. They do not penetrate into the cortex like permanent hair dye. Instead, they sit on the cuticle layer and create a toning film that visually counteracts warmth. This is why results fade with each wash — the pigments gradually rinse away, and you need to reapply. The strength of the formula determines how much pigment is deposited per wash, which is why choosing the right purple shampoo for your level of brassiness matters.
Best Purple Shampoos by Need
Fanola No Yellow
$14Strongest Formula
Intense violet pigment. The heavy hitter for serious brassiness. This is what salon professionals reach for when a client comes in with significant yellow tones that need immediate correction. The pigment concentration is noticeably higher than most drugstore options, so a little goes a long way.
- ✓ Best for: Very brassy blonde, silver, gray
- ✓ Use: Once a week max (it is STRONG)
- ✓ Bonus: Works as a toning mask when left on 5-10 minutes
- ✗ Not for: Daily use, already-ashy hair
Matrix Total Results So Silver
$17Best for Silver/Gray
Specifically formulated for gray and silver hair. Adds brightness without drying. This formula stands out because it includes a conditioning complex that actually leaves gray hair feeling softer after use, which is unusual for purple shampoos that tend to strip moisture.
- ✓ Best for: Natural gray, silver foxes
- ✓ Use: 1-2 times per week
- ✓ Bonus: Adds shine to dull gray
- ✗ Not for: Heavily brassed blonde (not strong enough)
Amika Bust Your Brass
$24Gentle + Conditioning
Violet pigment plus nourishing ingredients. Won't dry out your hair. The sea buckthorn berry in this formula is packed with omega fatty acids, making it one of the few purple shampoos that actually improves hair condition while toning. The scent is incredible — floral and clean without being overpowering.
- ✓ Best for: Damaged blonde, frequent use
- ✓ Use: 2-3 times per week
- ✓ Bonus: Smells amazing, cruelty-free
- ✗ Not for: Heavy brassiness (too gentle for major correction)
Clairol Shimmer Lights
$12Budget Classic
The OG purple shampoo. Been around forever, works great, costs less. This was the purple shampoo that started it all for many blondes. The formula is straightforward — strong violet pigment with no frills — and it delivers consistent results every single time.
- ✓ Best for: Budget-conscious blondes
- ✓ Use: 1-2 times per week
- ✓ Bonus: Widely available at drugstores
- ✗ Note: Can be drying — use good conditioner
Moroccanoil Blonde Perfecting
$28Luxury Salon Pick
Argan oil-infused formula that tones while deeply nourishing. This is the purple shampoo we recommend when clients say they want salon-quality results at home. The argan oil prevents that dried-out, straw-like feeling that cheaper purple shampoos can leave behind, and the violet pigment is perfectly balanced for maintenance toning.
- ✓ Best for: Salon-maintained blonde, balayage
- ✓ Use: 1-2 times per week
- ✓ Bonus: Leaves hair incredibly soft
- ✗ Note: Higher price point than drugstore options
Redken Color Extend Blondage
$22Best for Highlighted Hair
Citric acid and ultra-violet pigment formula designed specifically for highlighted and bleached hair. This shampoo deposits color gradually and evenly, which makes it nearly impossible to over-tone. It is the most forgiving option for beginners who are nervous about purple shampoo turning their hair an unexpected shade.
- ✓ Best for: Highlights, partial blonde, first-time users
- ✓ Use: Every other wash
- ✓ Bonus: Very hard to over-deposit pigment
- ✗ Note: Not strong enough for platinum maintenance
Olaplex No. 4P Blonde Enhancer
$30Toning + Bond Repair
The only purple shampoo that combines tone correction with patented bond-building technology. If your blonde hair is both brassy and damaged, this is the one to get. It repairs the internal bonds of your hair while neutralizing warmth on the surface — doing double duty in a single wash step.
- ✓ Best for: Damaged, over-processed blonde
- ✓ Use: 1-2 times per week
- ✓ Bonus: Strengthens hair while toning
- ✗ Note: Premium price, smaller bottle
How to Use Purple Shampoo (Without Turning Your Hair Purple)
Purple shampoo is not a regular shampoo, and you should not use it like one. The technique matters just as much as the product you choose. Here is the step-by-step approach that our stylists recommend to every client.
- Wet hair completely: Apply to wet hair like regular shampoo. The wetter your hair is, the more evenly the pigment distributes. Dry spots absorb more pigment and can create uneven toning.
- Lather and distribute: Make sure it is evenly spread from roots to ends. Use a wide-tooth comb to work the shampoo through if you have longer or thicker hair. Uneven application is the number one cause of patchy toning results.
- Wait: Leave on 2-5 minutes depending on brassiness. Start with 2 minutes your first time and increase gradually. Do not leave on too long or you will get lavender hair. Set a timer — it is easy to lose track in the shower.
- Rinse thoroughly: Really get it all out. Leftover purple shampoo can continue depositing pigment on damp hair, leading to over-toning. Rinse until the water runs completely clear.
- Condition: Purple shampoo can be drying. Always follow with conditioner or mask. Apply from mid-lengths to ends and leave on for at least two minutes before rinsing. For extra moisture, try a deep conditioning treatment after your purple shampoo day.
Advanced Techniques for Better Toning
- The mask method: For stubborn brassiness, apply your purple shampoo to dry hair before showering. Leave it on for 10-15 minutes (watch it closely), then rinse and shampoo as normal. This deposits significantly more pigment than a wet application. Only do this once a month maximum.
- The cocktail method: Mix your purple shampoo 50/50 with your regular moisturizing shampoo. This dilutes the pigment and gives you a gentler toning effect that is perfect for maintenance between salon visits. Great for weeks when your hair is not very brassy but you want to prevent warmth from building up.
- Targeted application: Not all areas of your hair brass at the same rate. Face-framing pieces and the crown tend to get brassier faster due to sun exposure. Apply purple shampoo to those areas first and let them process longer before distributing to the rest of your hair.
- Pair with a purple mask: On weeks when your shampoo alone is not cutting it, swap in a purple conditioner or mask instead. This gives your hair a deeper dose of pigment while also conditioning — two birds, one stone.
Warning Signs
- • Hair looks lavender/lilac → Left on too long. Fix: wash with regular clarifying shampoo once or twice to remove excess pigment.
- • Hair feels dry/straw-like → Using too often. Cut back frequency and add a deep conditioner to your routine.
- • Purple stains on hands/nails → Wear gloves or scrub immediately after. The pigment bonds to keratin in nails.
- • Uneven toning (splotchy) → Not distributing evenly. Use a comb next time and apply to fully saturated wet hair.
How Often Should You Use Purple Shampoo?
- Platinum/Icy Blonde: Once a week
- Highlighted/Brunette: Every 2 weeks
- Natural Gray/Silver: 1-2 times per week
- Balayage: Every 1-2 weeks (learn more about balayage vs highlights)
Adjust based on your hair. If it is getting too ashy/purple, cut back. If brassiness is creeping in between uses, increase frequency by one session per week. Your water quality also matters — hard water with high mineral content can cause faster brassiness, so you may need more frequent purple shampoo sessions if you have hard water at home.
Blue vs Purple Shampoo
Purple cancels yellow. Blue cancels orange. If your hair pulls more orange than yellow, you need blue shampoo (better for brunettes with highlights). A quick way to tell the difference: hold a white piece of paper next to your hair in natural light. If the warmth looks yellow or golden, use purple. If it looks coppery or orange, use blue. Many highlighted brunettes actually need both — blue shampoo on the darker pieces and purple on the lighter ones. Pair your toning routine with a weekly deep conditioning treatment to keep lightened hair healthy and hydrated.
Frequently Asked Questions
Can purple shampoo turn hair purple?
Yes, but only if you leave it on too long or use it too frequently. Very porous hair (bleached, damaged, or high-lift blonde) absorbs pigment faster and is more susceptible to over-toning. If your hair has turned lavender or lilac, do not panic. Wash it two or three times with a regular clarifying shampoo, and the purple tint will fade within a day or two. To prevent it from happening, start with shorter processing times (1-2 minutes) and only increase if you need more toning power. If you have very porous hair, dilute your purple shampoo with regular shampoo before applying.
How often should I use purple shampoo?
For most blondes, once or twice a week is the sweet spot. Platinum and icy blondes should use it once a week to maintain cool tones. Highlighted hair typically needs it every other wash or about once every two weeks. Natural gray or silver hair benefits from one to two uses per week to keep it bright and free of yellowing. The key rule is this: purple shampoo is a maintenance tool, not an everyday product. Overuse will dry out your hair and can lead to an ashy, dull, or purple-tinged appearance. Alternate with your regular moisturizing shampoo on non-purple days.
Does purple shampoo work on brown hair?
Purple shampoo is designed for light hair — blonde, platinum, silver, gray, and light highlights. On fully brown or dark hair, you will not see any noticeable difference because the violet pigment is too subtle to show up against a dark base. However, if you are a brunette with blonde highlights, balayage, or ombre, purple shampoo will tone those lighter sections while leaving the brown unchanged. For brunettes dealing with orange or coppery brassiness in their lighter pieces, blue shampoo is actually the better choice since blue neutralizes orange tones more effectively than purple does. If your overall color is pulling warm and you want to tone the whole head, talk to your colorist about a salon toner treatment instead.
Can I use purple shampoo on color-treated hair?
Absolutely, and most purple shampoos are specifically designed for color-treated hair. However, if your hair has been recently colored (within the past 48 hours), wait before using purple shampoo — your cuticles are still open from the coloring process and may absorb too much pigment. After that initial waiting period, purple shampoo is one of the best tools for extending the life of your color between salon visits. Choose a sulfate-free purple shampoo (like Amika or Moroccanoil) to avoid stripping your color while you tone. For color-treated hair that is also damaged, the Olaplex No. 4P is the standout pick because it repairs bonds while toning.
Disclosure: This post contains affiliate links. I earn a small commission if you purchase through my links at no extra cost to you. Thanks for supporting Sis Hairven!
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