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She’s blonde & gorgeous. She’s grey & fearless. She’s cool & bold. She’s also uncertain about how often to use purple shampoo to keep brassiness at bay.
Purple shampoo is the hair hero that keeps blonde, grey and silver tones looking as fresh as they did the day you stepped out of the salon. With over 60 years of salon expertise at TONI&GUY, we know exactly what purple shampoo does. And we’re here to teach you everything we know about how to use purple shampoo.
Consider this your personal guide to how often you should use purple shampoo for lasting colour, wash after wash.
HOW OFTEN SHOULD I USE PURPLE SHAMPOO FOR MY HAIR TYPE?
Knowing how often and when to use purple shampoo is a delicate balance. Use it too often, and you could end up with dry hair. Don’t use it enough, and you’ll have more brass than a 30-piece brass band. The good news is that a good salon-quality purple shampoo delivers visible results almost instantly. After one wash, your colour will be visibly refreshed and revitalised.
In general, incorporating purple shampoo 1–3 times a week can maintain that salon-fresh finish. However, each hair type has its own unique needs, so how often you use purple shampoo can also vary.
HOW OFTEN TO USE PURPLE SHAMPOO ON BLONDE HAIR
Blonde hair loves purple shampoo. But that doesn’t mean you should use it every day. Include a good-quality purple shampoo in your routine 1–3 times each week to keep brassiness under control while enhancing that vivid, cool tone.
Follow with a purple conditioner to lock in softness and hydration for a nourished, soft-blonde finish.
HOW OFTEN TO USE PURPLE SHAMPOO ON GREY HAIR
Grey and silver hair tends to develop yellow tones over time. Including a purple shampoo 1–2 times weekly helps to keep grey hair bright and effortlessly cool.
Once a week, add in a purple toning mask to boost shine and replenish moisture (hint: our TONI&GUY Purple Toning Mask is great for restoring softness and shine).
HOW OFTEN TO USE PURPLE SHAMPOO ON BALAYAGE HAIR
Over time, warmth can creep into highlights and balayage on darker hair. To maintain vibrance, use a purple shampoo once per week.
For an added layer of protection, prep your hair with a heat protection product before styling. On non-purple-shampoo days, switch to a strengthening shampoo and conditioner duo for resilience and hydration.

Purple shampoo is best as a targeted treatment, used once or twice a week to keep brassiness at bay
HOW LONG DOES PURPLE SHAMPOO TAKE TO WORK?
How often to use purple shampoo is one thing. But it’s also important to know how long to leave purple shampoo on hair. For most hair types, leaving purple shampoo in for 1–5 minutes is ideal. It’s just long enough to neutralise brassiness without leaving any traces of purple behind. For lighter blondes, lean towards five minutes or one or two minutes for grey and silver tones. Leaving purple shampoo in your hair for an hour can leave you with a purple tint or dry out your hair, so our advice is to avoid this.
A BALANCED ROUTINE FOR HEALTHY HAIR
So, should you use a purple shampoo every wash? Not quite. Purple shampoo is best as a targeted treatment, used once or twice a week to keep brassiness at bay. Vibrant hair needs more than just purple shampoo. It needs a rotation of hydrating and strengthening products in between to keep your hair healthy and resilient. For an optimal balance, start each wash with a product tailored to your hair’s needs at that time.
Just had a salon visit? It’s the perfect time to alternate with TONI&GUY Damage Repair Shampoo and Conditioner. This combo is ideal for hair that’s been coloured, bleached or needs extra strength. The Damage Repair range fortifies the hair cuticle, minimises frizz, and keeps strands soft and manageable, so you’re maintaining that fresh-from-the-salon look at home.
When it’s been a few weeks since your last appointment, should you use regular shampoo before purple shampoo? Yes. Start with a gentle, nourishing shampoo, like TONI&GUY StrengthPlex Bond Repair Shampoo. The StrengthPlex range works wonders to maintain hair strength, build resilience, and add shine to colour-treated hair.
A balanced routine extends beyond shampoo and conditioner, especially if styling is part of your look. The TONI&GUY Heat Protection Mist is essential for shielding hair from heat damage, preserving colour vibrancy, and preventing breakage. For all-day moisture and softness, our TONI&GUY Leave In Conditioner offers added colour protection, minimises frizz and keeps hair smooth even in high humidity.
BYE BYE BRASSY, HELLO HEALTHY
Achieving long-lasting vibrance is all about a balanced purple shampoo routine that keeps brassiness at bay while preserving your hair’s health and softness. With TONI&GUY, you’re backed by over 60 years of salon-quality expertise, helping you make every wash count.
Explore the full TONI&GUY product range, designed to keep your hair vibrant and resilient between salon visits. Discover our how-to’s for more tips on maintaining your best colour wash after wash.