Why Ash Tones Go Brassy So Fast (Especially in NZ)
Ash and cool tones are naturally more prone to turning warm or brassy over time, and NZ's strong UV levels don't help, sun exposure fades cool tones faster than most people expect. Hard water in some areas can also pull hair towards warmer, brassier tones between salon visits.
The Purple Shampoo Rule Nobody Tells You
Purple shampoo isn't meant to be your everyday shampoo, using it too often can leave hair looking dull or overly grey. It's a targeted, occasional treatment to counteract warmth, not a full replacement for your regular wash routine.
Our Top Picks for Ash and Cool-Toned Hair
We’ve got a few solid options in salon, depending on your hair type, budget and how much upkeep you’re after:
- Kérastase Blond Absolu – our most nourishing pick, formulated specifically for lightened and cool-toned hair. If you want the full salon-professional experience, this is where we’d start.
- Pureology Strength Cure Blonde – a great all-rounder for blonde and lightened hair that needs extra strength and shine alongside the toning.
- Matrix Total Results Brass Off – a solid mid-range pick if brassiness is your main concern, especially for darker blondes and brunettes fighting warmth.
- Matrix Total Results So Silver – purpose-built for grey, white and silver tones that need cool, ashy maintenance.
- Lust Blonde – a lighter-touch toning option, good if you want something gentler for more frequent use.
- Biolage Colour Last Purple – our most affordable purple shampoo, a good entry point if you’re new to toning or just want to keep brassiness in check between salon visits.
Not sure which one suits your hair? Pop into the salon or flick us a message and we’ll point you in the right direction.
How Often to Use Purple/Toning Products
Most of our clients get the best results using a toning shampoo once a week, alongside their regular shampoo and conditioner the rest of the time. If your hair tends to warm up quickly, twice a week is fine, just watch for any dullness and dial it back if needed.
Frequently Asked Questions
How often should I use purple shampoo?
Once a week is the sweet spot for most people. Fine or lighter hair may need less, thicker or fast-warming hair may need it twice a week.
Can purple shampoo turn my hair grey or purple?
Overusing it can leave a slight grey or violet cast, especially on finer hair. If that happens, dial back frequency and let it fade naturally over a wash or two.
What's the difference between a toning shampoo and a toning mask?
The shampoo is for regular maintenance, while a toning mask delivers a stronger dose of pigment and is better used for a bigger colour correction or before a special occasion.
Will these products work on natural ash hair, not just coloured?
Yes, natural ash and cool-toned hair can warm up over time too, especially with sun exposure, so the same products apply.
