How Long Should You Leave Purple Shampoo On Dry Hair?

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Purple shampoo has become one of the most popular color neutralizing products as it is gentle enough to use at home but still effective, but long should you leave purple shampoo on dry hair?

How Long to Leave Purple Shampoo On Dry Hair

When using shampoo on dry hair, you should only leave it on for between five and fifteen minutes maximum. However, it’s important to note that dry hair is more porous than wet hair, and can easily be over-toned. 

There is nothing worse than trying to fix your hair color at home and having it turn out worse than before. 

So if you want to learn a bit more about how to properly use purple shampoo, what it will do to your hair, and how to ensure your hair does not get over-toned, keep reading. 

What Does Purple Shampoo Do?

Before we dig into how to use purple shampoo on your hair, it’s essential that you understand what this product actually does. 

Purple shampoo is a toning product that is typically used by hair stylists to tone blonde, silver, or brassy-colored hair.

If your hair is bleached and you notice yellow coloring, purple shampoo is a great at-home fix. 

The important thing to note about purple shampoo is that it is a powerful product. It will very much change the color of your hair, so you need to be cautious in how much you use it, how often you use it, and how long you keep it on. 

So let’s find out the dos and don’ts of using purple shampoo. 

How to Use Purple Shampoo

How to Use Purple Shampoo

Purple shampoo can be used in the shower, on damp hair, or on dry hair. The various application options depend on how strong you want the reaction to be. 

Here’s the thing: dry hair is more porous and therefore it will soak up more of the product and tone your hair more intensely. 

The effect of the shampoo intensifies over time, so if you are simply using it for a few minutes in the shower, it will affect the color much less than if you leave it on dry hair for several minutes.

If you are planning on only using purple shampoo in the shower for a few minutes, i.e. up to three minutes, you can use it once a week to keep your hair brass-free. 

However, if you are using it as a mask on damp or dry hair, it should be used far less frequently. 

The rule of thumb is to only use purple shampoo on dry hair when you start to see yellow colors coming through your bleached or highlighted hair. 

What Happens if You Overuse Purple Shampoo?

The reason why it’s important not to overuse purple shampoo is that it can leave you with dull, darker, and even sometimes purple hair. 

As it strips the brassy coloring from your light hair, you are essentially toning down the blonde that you originally dyed, and it may end up looking washed out and in the worst-case scenario, it can turn a bluish-purple color. 

When using purple shampoo, it’s important that you are close to a mirror and can watch the hairs to see if they are becoming dull or blue. If so, wash it out straight away. 

Also, if you do not apply it evenly, using purple shampoo can lead to patchy discoloration instead of an all-over toning. 

Can Purple Shampoo Damage Your Hair?

Even though using too much purple shampoo or leaving it on too long can create a dull, lifeless color and possibly create patches in your hair, the good news is, it will not damage your hair follicles. 

That means that if you do accidentally change the color of your hair too much, your hair will not actually be affected, you may just want to return to the hair salon to get the color you originally wanted to be dyed by a professional. 

Although it may sound like a risky product, if used correctly, purple shampoo can be a great way to keep your hair looking beautiful long after you have been to the salon. 

So let’s find out how to use it on dry hair the right way. 

How to Use Purple Shampoo On Dry Hair

How to Use Purple Shampoo On Dry Hair

As you now know, purple shampoo can work wonders on your hair if used correctly. You can use it in the shower as your shampoo, or you can put it on damp or dry hair as a mask. 

Using purple shampoo on dry hair is the most efficient way to tone your hair as when dry, the pores within your hair are more open and absorb the shampoo better.

However, it is also the riskiest as you need to keep a close eye on your hair during this process to make sure you don’t over-tone it. 


To use purple shampoo safely on your dry hair, just follow these simple instructions: 

  • Wait until your hair needs to be washed next.
  • Thoroughly brush your hair so there are no knots. 
  • Use about two tablespoons of shampoo, or enough to cover your scalp and hair all the way to the ends. 
  • Apply the shampoo evenly. 
  • Leave in for between five and fifteen minutes, depending on how brassy the hair is. 
  • Wash the shampoo out and use a standard conditioner or mask to re-moisturize. 

That’s all there is to it. 

Just remember, you should be watching your hair through the process to ensure you don’t start to see blue or purple tones coming through. If you do, wash out the shampoo immediately. 

Although we already mentioned that purple shampoo does not technically damage your hair, it does slightly dry it out. 

We recommend applying an intense moisture conditioner or hair serum after use to make sure your hair doesn’t become brittle or frayed. 

What to Do if You Over-Tone Your Hair With Purple Shampoo

So, you left the purple shampoo in too long and your hair has become dull, over-toned, or even purple in color. 

Don’t worry, your hair isn’t ruined. You can and should use a clarifying shampoo to counteract the damage. 

You can alternate between this option and a moisturizing color-safe shampoo to keep your hair healthy and beautiful. 

If worse comes to worst, and you simply cannot get your hair back to your desired color, you may have to reach out to a professional for a color correction. 

What Are the Best Purple Shampoo Brands

What Are the Best Purple Shampoo Brands

Now that you know everything there is to know about purple shampoo, let’s talk about the best purple shampoo brands. 

As with any hair product, choosing the right one can be the difference between beautifully toned hair and a dry patchy mess. 

Here are our top five favorite purple shampoos:

  • R+Co Sunset Blvd Daily Blonde Shampoo
  • OGX Hydrate ; Tone Reviving ; Lavender Luminescent Platinum Shampoo
  • Clairol Shimmer Lights Purple Shampoo for Blonde ; Silver Hair
  • dpHUE Cool Blonde Shampoo
  • L’Oréal Paris EverPure Sulfate Free Purple Shampoo

Each of these products are slightly different, so we recommend choosing the right one for your specific color needs. 

Final Thoughts

So, how long should you leave purple shampoo on dry hair? Well, now you know that it is safe to use for anywhere between five and fifteen minutes. 

Of course, you are essentially a purple shampoo expert now, but the most important thing to remember is to start slowly and watch how the shampoo affects your hair. You do not want to over-tone, but if you do, don’t worry, it won’t wreck your hair.

Frequently Asked Questions (FAQ)

Can you leave purple shampoo on for thirty minutes?

While some bottles do say that you can leave the product on for thirty minutes, we do not recommend it. If you start with a 15-minute mask and it does not produce the results you are looking for, you can try another 15-minute session in a few days. 

What temperature water should you use to wash out purple shampoo? 

Cold water works best as it will help the toner set. Lukewarm water can also be used but it’s best to avoid hot water. 

Why isn’t purple shampoo working?

In some instances, people try to use purple shampoo to get out orange coloring. Unfortunately, purple shampoo only works on blonde or gray hair that is yellowing or becoming brassy, not on orange hair. 

Can you mix purple shampoo with regular shampoo?

You can and you should mix your purple shampoo with regular shampoo. If you wash your hair twice a week, one wash should be done with a standard or color-safe shampoo and one with a purple shampoo. 


Disclaimer: This site is not intended to provide professional or medical advice. All of the content on is for informational purposes only. All advice should be followed at your own discretion. Ingredients may change at any time so always check the product label before using. Check our full disclaimer policy here.

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Dee is the founder of Loved By Curls and in-house Curly Girl expert. She loves natural haircare and has tried and tested her share of CGM products. She's always happy to recommend you her favorites.