Purple shampoo: when to use it for clean blonde without a lavender tinge

Use your purple shampoo 1 to 2 times a week, never more, as soon as your blonde or balayage hair starts pulling yellow or coppery. The right moment isn't a fixed schedule: your tone tells you. Too early or too often, and it turns grey or mauve.

Which hair should use a purple shampoo?

Purple shampoo, also called anti yellow tone shampoo, is made for polar blondes, cool blondes, balayage and highlights that turn yellow or red over time. The purple pigment neutralises those unwanted warm tones on an already light base.

It isn't made for dark hair or brown bases: with no yellow to neutralise, purple has nothing to correct and can just dull the colour. On a golden blonde or honey blonde base that you actually want to warm up, a repigmenting shampoo like the Blond Vanille Shampoo or the Blond Miel Shampoo will suit you better than a purple one.

When exactly should you use a purple shampoo in your routine?

The signal to look out for: your roots or lengths start going yellow, often 1 to 3 weeks after a colour, a balayage or a session with the lightening spray. That's exactly when to step in, not before.

Using a purple shampoo too early, on a blonde that's still clean, does nothing and can even make it look grey. Simple rule: you use it when you see the yellow appear, not as systematic prevention.

How often should you use purple shampoo?

The recommended frequency is 1 to 2 times a week, no more. Using it too often dries out the hair fibre and can leave a dull or greyish finish, especially on fine or already fragile hair.

How long should you leave it on?

The recommended processing time is 2 minutes maximum. The longer it sits, the stronger the neutralising effect, but the risk of turning grey or mauve rises fast. Two minutes is plenty to neutralise yellow without overdoing it.

The dilution trick

If your blonde is already fairly cool, or you're worried about too strong an effect on the first use, dilute the purple shampoo with a pigment free shampoo. You get a more gradual result that's easier to control, rather than a dramatic and sometimes unpredictable effect from the very first application.

Then rinse with cool or lukewarm water, never hot, so you don't add to the dryness.

Should you use it after bleaching or lightening?

Yes, that's often the ideal moment. Salon bleaching or gradual lightening brings out yellow or golden tones that purple shampoo corrects. Wait until your hair is fully dry and you can see the real tone before deciding whether to neutralise.

If you've just used the OMAD'S lightening spray to lighten your base, the anti yellow tone shampoo comes afterwards, on an already lightened base, purely to correct the tone. The two products don't play the same role: the spray lightens the existing base, the shampoo deposits or neutralises a tone on that base once it's light.

Is purple shampoo suitable for grey or white hair?

Yes, but in one specific case: when grey or white hair goes yellow over time, or from sun exposure and styling products. Anti yellow tone shampoo neutralises that yellowing and brings back a cleaner white or grey.

A lightening product like the spray, on the other hand, has no effect on these bases: with no melanin left, there's nothing to lighten. For grey or white hair that's yellowing, go straight for the anti yellow shampoo, not a lightener.

Does purple shampoo lighten hair?

No, and it's a common mix up. Purple shampoo does one job: it neutralises or deposits a tone on an already light base, it never makes hair lighter than it is. If your goal is to go from brown or dark blonde to a lighter blonde, you need a lightening product, not a pigmented shampoo.

That's where the routine builds in two steps: first lighten the base, then correct or warm up the tone.

Our OMAD'S routine: lighten, then neutralise

Here's a two step routine that respects those distinct roles:

1. Lighten the base with the OMAD'S lightening spray, a formula that's 95% of natural origin, rated 100/100 on Yuka, ammonia free. It lightens by 2 to 4 shades gradually, with first results visible from the very first application. Apply it to clean, slightly damp hair, activate with the heat of the sun or a hairdryer, repeat 2 to 3 times a week at the start then once a week for maintenance.
2. Neutralise or warm up the tone once the base is lightened, depending on what you're after: the anti yellow tone shampoo to correct yellow, or a repigmenting shampoo like Blond Vanille or Blond Miel to deposit a specific tone.

To round it off, a night serum once or twice a week nourishes the lengths and ends, which these pigmented routines put under more strain. This routine is a hit with our customers: 4.5/5 average rating from 1,702 approved reviews for the lightening spray.

If you're not sure exactly where your base is at or what result to aim for, our free hair diagnostic helps you see clearly before choosing your routine.

Mistakes to avoid with purple shampoo

Common mistake	Consequence	The right move
Using it every day	Dull hair, greyish tone	1 to 2 times a week maximum
Leaving it on for more than 2 minutes	Turning grey or mauve	2 minutes maximum
Using it on dark or brown hair	No useful effect, sometimes dullness	Keep it for blonde or grey bases that yellow
Using it without having lightened the base	Disappointed expectations, no real transformation	Lighten first, neutralise after
Rinsing with very hot water	Dried out fibre, colour that lasts less	Rinse with cool or lukewarm water

FAQ

When should you use a purple shampoo?

As soon as your blonde, your balayage or your highlights start going yellow or pulling coppery, generally 1 to 3 weeks after a colour or a lightening session. It's not a systematic preventive step, it's a response to the tone showing up.

How long should you leave a purple shampoo on?

2 minutes maximum. The longer it sits, the stronger the neutralising effect, but the risk of turning grey or mauve rises quickly. Two minutes is enough to correct yellow without overdoing it.

Can you use a purple shampoo every day?

No. Daily use dries out the fibre and can make your blonde look grey or dull. The recommended frequency is 1 to 2 times a week, never more, with a cool or lukewarm rinse afterwards.

Does purple shampoo work on dark hair?

No. Without a light base, the purple pigment has no yellow to neutralise and no useful effect. It's for polar blondes, cool blondes, balayage and highlights that turn, not for brown or dark hair.

Does purple shampoo lighten hair?

No, it never makes hair lighter. It neutralises or deposits a tone on an already light base. To lighten a brown or dark blonde base, you need a lightening product like the spray, used beforehand.

Is purple shampoo suitable for grey or white hair that's yellowing?

Yes, that's exactly one of its good uses: neutralising the yellowing of grey or white hair. A lightening product, however, has no effect on these bases, as there's no melanin left to lighten.

Should you use purple shampoo after bleaching?

Yes, often at the point when yellow or golden tones come through after bleaching or lightening. Wait until the hair is dry to judge the real tone, then use the anti yellow tone shampoo to correct it.

You now know exactly when to get your purple shampoo out of the cupboard, and above all when it isn't the right move yet. If your base needs lightening first, start with the OMAD'S lightening spray and save the purple for later in your routine, once the yellow has settled in. Our story and our full range are waiting for you if you want to build your blonde routine step by step.