For beauties who have very light hair, maintaining its colour can be a battle. Pro:Voke Touch Of Silver Brightening Shampoo is a twice-weekly treatment that aims to brighten blonde, white and grey hair. We want to see if this cheap and cheerful product can deliver envy-inducing locks, without a bank-breaking trip to the salon!

The Claims

The promise is simple: to actively neutralise the brassiness that can sometimes develop in lighter hair colours. Particularly dyed blonde hair is prone to colour change, gaining yellowish undertones when exposed to different environmental factors. Can the ingredients prevent this? Let the investigation begin!

The Science behind the Bottle

Colour Correcting Pigments

Violet and blue pigments (Acid Violet 43 & Hc Blue No.2) are  included in this shampoo to neutralise any existing yellow tinges. They coat the hair and counteract any brassiness, to brighten up its appearance. If the thought of purple and blue dyes in your shampoo fills you with panic, don’t worry! The levels of these compounds in the product are so small that they will give just a neutralising tint, rather than an all-over dye.

Disodium EDTA

We’ve all heard that swimming pools can gradually give light hair a greenish tinge and this is something that most of us want to avoid! The colour change is caused by excess copper compounds in the water (not chlorine, like some believe) and can even happen at home if there are problems with the plumbing. Copper compounds bind to proteins on the surface of hair and their blue-green colour becomes more noticeable as they begin to accumulate. Disodium EDTA is a chelating agent: it binds copper and helps to remove it from the hair surface. This should have a brightening effect and reduce any unwelcome green tones! Phew!

Benzophenone-4

Exposure to UV rays in sunlight is one of the big causes of colour change in hair. When UV light is absorbed, free radicals are produced – yep, those guys aren’t just bad news for the skin! UVB rays are absorbed by keratin proteins in the hair, and the resulting free radical damage can weaken the structure and lead to split ends. UVA rays are thought to penetrate a bit deeper where they are absorbed by melanin: the pigment that determines our hair colour. Melanin behaves a bit like a guardian, immobilising free radicals before they can get to keratin and affect the hair structure. This degree of protection comes at a cost though: melanin is either broken down or bleached and this can cause our hair colour to change. The benzophenone-4 in this shampoo coats the hair and helps to prevent these processes by absorbing UV rays before they can penetrate deep enough to cause damage. By helping to keep split ends at bay too, this ingredient does more than fulfil the product claim – it’s a tick from us! There has been some research that suggests that Benzophenone-4 can cause irritation in some cases so it would be best to patch test before using this shampoo, especially if you have sensitive skin.

What about the other ingredients?

The key purpose of shampoo is to clean the hair and it’s the cocktail of surfactants in this product that make this happen. Sodium laureth sulphate (along with a number of other compounds with very long names!) allows oil and water to mix, making it easier for grease and dirt to be rinsed off – hello fresh locks! Combine this with anti-dandruff salicylic acid and polyquaternium-10 to reduce static electricity, we’re happy to see that this shampoo should deliver on most of our hair-care needs while it tackles our brassiness bothers.

The Verdict

With the protection of benzophenone-4 and disodium EDTA combined with the neutralising violet and blue tints, we’re confident that this shampoo will help to banish any brassiness to leave light hair looking brightened. For such savvy science at only £3.19, it’s an absolute steal!

You can find Pro:Voke Touch Of Silver Brightening Shampoo here

Loved this article? We think you’ll like these ones too!

Aveda Hair Thickening Tonic

How To Grow Your Hair: Quick!

Brittle Hair – The Science Behind The Problem

Ingredients:

Aqua (Water/Eau), Sodium Laureth Sulfate, Peg-7 Glyceryl Cocoate, Disodium Cocoamphodiacetate, Sodium Coco-Glucoside Tartrate, Glycol Distearate, Laureth-4, Cocamidopropyl Betaine, Coco-Glucoside, Glyceryl Oleate, Polyquaternium-10, Propylene Glycol, Peg-55 Propylene Glycol Oleate, Carbomer, Benzophenone-4, Salicylic Acid, Laureth-2, Disodium Edta, Sodium Benzoate, Sodium Chloride, Formic Acid, Parfum (Fragrance), Hydroxyisohexyl 3-Cyclohexene Carboxaldehyde, Butylphenyl Methylpropional, Linalool, Sodium Hydroxide, Acid Violet 43, Hc Blue No.2