One of the most common things we hear in the salon is this:
“My colour keeps going warm.”
Often it’s said with frustration. Sometimes with a quiet hope that a toner, or a purple shampoo, will fix everything.
But here’s the truth most people don’t realise.
Hair colour isn’t a repair job.
It’s a strategy.
If warmth keeps appearing in your hair, the real solution usually starts with stepping back and looking at the bigger picture. Because the most sustainable colour isn’t necessarily the coolest one. It’s the one your hair can actually support.
All hair contains warmth. That’s chemistry, not a mistake.
Every natural hair colour contains warmth. When hair is lightened, those underlying pigments reveal themselves - showing up as copper, orange, or golden tones as the hair lifts. For darker bases especially, this can feel dramatic.
This isn’t something that has “gone wrong”. It’s simply how hair works.
What often happens is someone has had a previous experience with a tone they didn’t like - maybe it felt too brassy, too orange. From that point on, anything remotely warm gets labelled as the enemy. But warmth exists on a spectrum.
For many people, the most flattering tones actually sit somewhere in the middle. Soft golds, honey tones, warm brunettes, champagne blondes. These shades often look more natural, more dimensional, and far more expensive than icy tones that fight against the hair’s own pigment.
Interestingly, there are very few skin tones that truly suit extremely cool colours. Which is why many colourists are quietly moving away from icy and ashy tones altogether - favouring colours that work with the hair rather than constantly trying to suppress it.
Not all hair strands behave the same way
Another piece of the puzzle that surprises many people: the hair on your head doesn’t all react to colour identically.
Take someone with around 20% white hair who wants to lighten their colour slightly to soften the contrast as white grows in. The remaining 80% of natural hair still contains pigment. When that hair is lightened, those underlying warm tones become visible. So while the white strands blend beautifully, the rest of the hair may reveal warmth that wasn’t obvious before.
Add in previous colour, pigmented conditioners, semi-permanent dyes, or older colour sitting in the hair, and things become even more complex.
Hair colour builds history. Each layer influences the next.
Which is why truly correcting warmth often isn’t a one-and-done fix. It’s a journey toward the right tone — done at the right pace, with the health of the hair intact.
When toner isn’t the real solution
There’s a common misconception that warmth should simply be toned away.
In reality, relying heavily on toner often just masks the underlying issue. The goal in the salon is always to lift the hair as cleanly as possible first. When the foundation is right, toner becomes an enhancer rather than a disguise.
Tone should refine the colour, not conceal a problem.
When a colour relies too heavily on toning to look right, it often fades quickly - returning to warmth within weeks. A sustainable colour plan focuses on the health and structure of the hair first, then builds tone on top of that.
What causes warmth to return between appointments?
Even when a colour is beautifully balanced in the salon, several things can cause warmth to reappear over time.
One of the most common is using the wrong haircare at home. Lightened hair becomes more alkaline, which makes it more vulnerable to fading and tone shift. Using shampoos and conditioners that support the correct pH helps stabilise both the colour and the health of the strand.
Sun exposure also plays a role - UV light slowly breaks down colour pigments, particularly cooler tones. Heat tools contribute too, especially without heat protection.
And then there’s something many people never consider: water.
Minerals in the water supply - particularly copper and other metals - can attach themselves to the hair over time, creating a dull warmth or brassiness that wasn’t present immediately after colouring. This is why clarifying treatments and mineral removal can sometimes make such a dramatic difference to how colour behaves.
A note on purple shampoo
Purple shampoo has its place. Used in the right conditions, it can help soften yellow or golden tones in lighter hair.
But it’s widely misunderstood.
Purple shampoo won’t neutralise copper or deeper orange tones. In fact, using it in those situations can sometimes make warmth appear stronger rather than softer. Like toner, it should support the colour - not compensate for hair that wasn’t lifted far enough in the first place.
The real goal: colour that works with your hair
When someone comes to us frustrated about warmth, the first step isn’t reaching for a stronger toner. It’s having a conversation.
What colour are you aspiring to? Is it realistic for your hair right now? Does it fit your lifestyle and maintenance routine?
If the answer is yes, we map out a plan to get there safely. If not, we find a tone that sits in the sweet spot between beautiful, achievable, and sustainable - because pushing hair too far just to chase a certain look rarely ends well.
Hair health will always come before forcing the hair into something it can’t comfortably support.
Warmth isn't the problem. Imbalance is.
Warmth in the hair isn’t automatically a problem. The real distinction is between brassiness and intentional warmth.
One looks unbalanced.
The other looks rich, dimensional, and natural.
If your colour keeps drifting warm, the answer usually isn’t another toner.
It’s a better plan.
Want to understand what’s actually happening with your colour?
A consultation gives us the chance to step back, look at the bigger picture, and create a strategy that actually works for your hair - long term.
