A Professional Comparison Guide
If you’re blonde and trying to keep your hair bright, you’ve probably asked yourself:
“Do I need purple shampoo — or is Davines Heart of Glass better?”
It’s a common question, and the answer isn’t one-size-fits-all. Professionals don’t see these as competing products — they see them as tools, used for different reasons.
In this guide, we’ll compare purple shampoo and Davines Heart of Glass, explain when each works best, and help you choose the right option for your blonde hair.
What Is Purple Shampoo?
Purple shampoo contains violet pigments designed to neutralise yellow and brassy tones in blonde, grey or lightened hair.
What purple shampoo does well:
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Quickly corrects unwanted warmth
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Refreshes tone between salon visits
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Works well on very light or platinum blonde
Where purple shampoo can cause problems:
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Can dry hair if overused
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Can make blonde look dull or grey
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Doesn’t improve hair strength or condition
Professionals use purple shampoo sparingly and strategically — never as a daily cleanser.
What Is Davines Heart of Glass?
Davines Heart of Glass is a professional blonde care range designed to strengthen, protect and illuminate blonde hair while gradually neutralising yellow tones.
Unlike traditional purple shampoos, it focuses on:
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Hair health and strength
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Controlled, gentle toning
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Shine and softness
What Heart of Glass does best does best does best:
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Maintains bright blonde without dryness
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Strengthens lightened hair
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Improves shine and manageability
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Safer for frequent use
It’s often used as a blonde maintenance system, not just a toner.
Purple Shampoo vs Heart of Glass: Side-by-Side Comparison
Tone Correction
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Purple shampoo: Strong, fast-acting toning
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Heart of Glass: Gradual, controlled toning
Hair Condition
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Purple shampoo: Can dry hair if overused
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Heart of Glass: Actively strengthens and nourishes
Frequency of Use
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Purple shampoo: 1–2 times per week
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Heart of Glass: Suitable for regular use
Best For
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Purple shampoo: Very light, brassy or yellow blonde
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Heart of Glass: Blonde hair that needs tone and strength
What Do Professionals Actually Recommend?
Professionals rarely choose one or the other — they combine them.
Professional blonde strategy:
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Use purple shampoo when brassiness appears
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Use Heart of Glass to maintain tone, strength and shine
This prevents over-toning while keeping blonde hair healthy.
How to Use Purple Shampoo and Heart of Glass Together
Step 1: Daily / Regular Care
Keeps blonde bright, soft and strong.
Step 2: Weekly Tone Boost
Corrects brassiness when needed.
Step 3: Strengthen Lightened Hair
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Olaplex No.3 Hair Perfector (weekly or bi-weekly)
Supports hair integrity and reduces breakage.
Step 4: Protect from Heat
Preserves tone and hair condition.
Which Should You Choose?
Choose Purple Shampoo if:
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Your blonde is very light or platinum
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You need a quick tone refresh
Choose Heart of Glass if:
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Your blonde feels dry or fragile
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You want long-term blonde health
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You prefer gentle, consistent toning
Best option?
👉 Use both — correctly and in balance.
The Easy Option: A Professional Blonde Routine
Professionals often recommend a complete blonde routine that includes:
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Blonde-specific cleansing
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Controlled toning
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Strengthening treatments
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Heat protection
👉 Shop the Blonde Hair Professional Routine
This removes guesswork and prevents over-processing.
Final Professional Advice
Purple shampoo and Heart of Glass aren’t rivals — they’re partners.
When used together properly, they keep blonde hair bright, strong and salon-fresh without dryness or damage.
👉 Want help building the right routine?
Read our Blonde Hair Routine Guide or visit our Start Here: Professional Haircare Hub.
