What Does Purple Shampoo Do and How to Use It
If your blonde, gray, or lightened hair keeps turning yellow or brassy between salon visits, purple shampoo can give your routine the boost it's missing. It is one of the most talked-about products in color care, but many people are not entirely sure what it does, who it is for, or how often to use it. This guide breaks down what purple shampoo does, how it works, and how to use it correctly so you get brighter, cooler tones without overdoing it.
What Does Purple Shampoo Do
Purple shampoo is a toning shampoo formulated with violet or purple pigments designed to counteract unwanted warmth in light hair. Blonde, gray, and lightened hair naturally develop yellow or brassy undertones over time due to factors like sun exposure, hard water, and the natural fading of cool-toned dye. Purple sits opposite yellow on the color wheel, so when purple pigment is deposited onto the hair, it neutralizes those warm tones and helps restore a cooler, brighter look.
Purple shampoo is a toning product, not a lightener. It deposits violet pigment to counteract yellow and brassy tones rather than lifting your hair's pigment. It mildly cleanses, but it's formulated to work alongside your daily shampoo and conditioner, not replace them. Overuse can build up too much violet pigment and leave hair looking flat or dull instead of bright.
How Purple Shampoo Works
Purple shampoo relies on color theory. Warm, brassy tones and cool, purple tones cancel each other out when combined, similar to how blue cancels orange in color correction. As you massage purple shampoo through damp hair, the violet pigments temporarily deposit onto the hair shaft. This deposit is what neutralizes brassiness, and it is also why leaving the product on too long or using it too frequently can leave hair looking dull or slightly purple or gray-toned, especially on finer or more porous strands.
Because the pigment sits on the hair rather than altering its structure, the results are temporary and fade with each rinse, which is exactly why purple shampoo is meant to be used periodically rather than as a daily cleanser.
How to Use Purple Shampoo
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Wet hair thoroughly, then apply purple shampoo evenly from roots to ends.
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Massage gently and let it sit for one to five minutes, depending on how much brassiness you are targeting and how light your hair is.
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To help fight discoloration caused by hard water mineral buildup, use the Malibu C Malibu Blondes Wellness Remedy. Use after the first shampoo, allow to remain on the hair for five minutes, and shampoo again.
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Rinse thoroughly and follow with a hydrating conditioner to replenish moisture.
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Start with shorter processing times and check your hair's tone before extending, since overuse can lead to a dull or ashy cast.
Frequency depends on your hair's tone and how quickly it develops warmth. Many people use purple shampoo once or twice a week, adjusting based on how their hair looks and feels between uses.
The Malibu Blondes Enhancing Shampoo is formulated to help tone and brighten blonde and lightened hair while working with your regular routine. Pair it with the Malibu Blondes Enhancing Conditioner to help maintain moisture and softness alongside your toning routine.
Purple Shampoo for Blonde Hair
Blonde hair, whether natural or lightened through color services, is especially prone to developing brassy or yellow undertones. This happens because the hair's underlying pigment shows through more easily once natural color is lifted or lightened, and factors like sun exposure and mineral buildup from hard water can intensify that warmth over time. Purple shampoo helps counteract this by depositing cool pigment that keeps blonde tones looking bright rather than yellow or muddy. For a deeper look at what causes this discoloration in the first place, see our guide on why hair turns brassy and how to fix it.
Purple Shampoo for Gray Hair
Gray and white hair can develop a similar yellowing effect, often from environmental exposure, styling products, or mineral buildup in the hair shaft. Because gray hair lacks pigment of its own, it tends to show warm discoloration even more visibly than blonde hair does. Purple shampoo can help gray hair maintain a brighter, cooler look by neutralizing that yellow cast the same way it does for blonde hair. Gray hair is often more porous than pigmented hair, so shorter processing times and closer attention to results are recommended to avoid an overly ashy or dull finish.
Purple Shampoo on Brown Hair
Purple shampoo is typically associated with blonde and gray hair, but it can offer some benefit for brown hair with lightened pieces, such as balayage, highlights, or ombre. In these cases, purple shampoo can help tone down brassiness in the lightened sections while generally having a minimal effect on the deeper, unlightened base color. For brunettes without any lightened strands, purple shampoo will not typically provide much benefit and a color-depositing brown or brunette specific shampoo may be a better fit. If you have highlights or a lightened money piece and are unsure whether purple shampoo is right for your color combination, a color specialist can help determine the best toning approach for your specific tones.
Blue vs Purple Shampoo
Purple and blue shampoos both work by using color theory to counteract unwanted tones, but they are designed for different starting shades.
|
Feature |
Purple Shampoo |
Blue Shampoo |
|
Best for |
Blonde, gray, and lightened hair |
Brown and darker hair |
|
Neutralizes |
Yellow and brassy tones |
Orange and copper tones |
|
How it works |
Deposits violet pigment to cancel yellow |
Deposits blue pigment to cancel orange |
|
Common use case |
Maintaining bright, cool blonde or gray tones |
Toning down orange or red warmth in brunette hair |
The simplest way to choose between the two is to look at the tone you are trying to cancel out. Yellow and brassy tones call for purple, while orange and copper tones respond better to blue. Using the wrong one will not necessarily damage your hair, but it will be far less effective at correcting the specific discoloration you are seeing.
Purple Shampoo and Conditioner: Building a Complete Routine
Purple shampoo works best as part of a full toning and maintenance routine rather than a standalone step. Pairing the Malibu Blondes Enhancing Shampoo with the Malibu Blondes Enhancing Conditioner helps reinforce toning results while supporting moisture balance, since toning shampoos can be drying if used without a hydrating follow-up.
For hair dealing with more stubborn brassiness or mineral buildup from hard water, the Malibu Blondes Wellness Remedy offers a deeper weekly treatment that helps clear buildup before it interferes with your color. Removing that buildup first allows toning products to work more effectively, since a clean hair shaft absorbs pigment more evenly. If you are preparing for a lightening service or want to understand how buildup affects color results overall, our guide on oxidation management for predictable color results offers a closer look at how this process works.
Purple Shampoo Before and After: What to Expect
Immediately after using purple shampoo, blonde, gray, or lightened hair should appear brighter and cooler, with visibly reduced yellow or brassy tones. This effect is temporary and will gradually fade as the deposited pigment rinses out over subsequent shampoos, which is why consistent, periodic use produces the most noticeable long-term difference compared to a single application. Results will vary based on your hair's natural tone, porosity, and how much warmth it develops between uses.
Ready to brighten your tone? Explore the Malibu Blondes Enhancing Shampoo and Malibu Blondes Enhancing Conditioner to build a toning routine suited to your hair.
Frequently Asked Questions
