Best for: All highlighted and lifted hair tones that need brassiness neutralised and protection against future brass caused by metals and minerals.

What is K18 TripleBright Oxidation Defense Purple Shampoo?

K18 TripleBright Oxidation Defense Purple Shampoo is a triple-action purple shampoo designed to remove brass-inducing metals and minerals, neutralise existing brassiness and defend against future brass for brighter, longer-lasting blonde.

Unlike a traditional colour-depositing purple shampoo, TripleBright targets brassiness with three technologies. Ionic detox removes brass-inducing metals and minerals, precision violet technology neutralises existing brassiness without staining or overtoning, and a biopolymer helps prevent metals and minerals from reattaching to the hair during washing.

The easy-to-apply foam formula works across all hair types and textures and is designed for all highlighted and lifted tones.

Who is it best for?

K18 TripleBright Oxidation Defense Purple Shampoo may suit you if your hair:

• is highlighted or lifted
• has developed unwanted brassiness
• is exposed to metals and minerals from hard water
• needs its tone restored and evened
• needs brassiness neutralised without overtoning
• needs protection against future brass caused by metals and minerals
• needs a purple shampoo that won't stain when used as directed

K18 states that TripleBright works across all hair types and textures and brightens all highlighted and lifted tones.

What problem does it solve?

Brassiness isn't only about correcting the visible tone of the hair. K18 identifies oxidation, including metals and minerals found in hard water, as an underlying cause of brassiness.

K18 TripleBright Oxidation Defense Purple Shampoo uses a three-step approach:

Remove → Neutralise → Defend

First, ionic detox removes brass-inducing metals and minerals. Next, precision violet technology neutralises existing brassiness without staining or overtoning. Finally, a biopolymer helps prevent metals and minerals from reattaching to the hair during washing to defend against future brass.

K18 states that one wash can remove up to 3 months of brass from hard water while restoring and evening the ideal hair tone for all highlighted and lifted tones.

Key technology

Ionic Detox: Removes brass-inducing metals and minerals from the hair.

Precision Violet Technology: Neutralises existing brassiness without staining or overtoning.

Biopolymer: Helps defend against future brass by helping prevent metals and minerals from reattaching to the hair during washing.

Together, these form K18's triple-action technology to remove, neutralise and defend against brassiness.

Ingredients

Water (Aqua) (Eau), Cocamidopropyl Hydroxysultaine, Sodium Cocoyl Alaninate, Sodium Methyl Cocoyl Taurate, Propanediol, Polysorbate 20, Cocamidopropyl Betaine, Trisodium Dicarboxymethyl Alaninate, Sodium Phytate, Polyquaternium-77, Glycerin, Sodium Polyaspartate, Sodium Citrate, Sodium Gluconate, Citric Acid, Tetrasodium Glutamate Diacetate, Aspartic Acid, Caprylyl Glycol, Cocamidopropyl Dimethylamine, Sodium Glycolate, Sodium Hydroxide, Sodium Benzoate, Sodium Chloride, Acid Violet 43 (CI 60730), Phenoxyethanol, Fragrance (Parfum), Hexyl Cinnamal, Hydroxycitronellal, Citrus Limon (Lemon) Peel Oil, Tetramethyl Acetyloctahydronaphthalenes, Limonene, Benzyl Salicylate, Citrus Aurantium Peel Oil, Citrus Aurantium Flower Oil.

How to use K18 TripleBright Oxidation Defense Purple Shampoo

Apply 2–3 pumps of the foam shampoo to wet hair.

Distribute evenly through the hair, lathering from roots to ends. Leave on for a maximum of 1–3 minutes, then rinse.

Use up to once weekly.

Why choose it?

Hair type: All hair types and textures
Best for: Highlighted and lifted tones
Primary concern: Brassiness
Key action: Removes + neutralises + defends against brass
Key technologies: Ionic detox + precision violet technology + biopolymer
Texture: Easy-to-apply foam
Application: 2–3 pumps
Leave-on time: 1–3 minutes maximum
Recommended use: Up to once weekly
Size: 125ml
Routine step: Cleanse + tone
Brand: K18
Product: TripleBright Oxidation Defense Purple Shampoo

Millies Expert Advice

With K18 TripleBright Oxidation Defense Purple Shampoo, follow the recommended 1–3 minute maximum application time rather than leaving the purple shampoo on for longer. Apply 2–3 pumps to wet hair, distribute the foam evenly from roots to ends and use up to once weekly.

Is K18 TripleBright Oxidation Defense Purple Shampoo right for me?

Choose this if: your highlighted or lifted hair has developed unwanted brassiness and you want a purple shampoo that removes brass-inducing metals and minerals, neutralises existing brass and helps defend against future brass.

Consider another shampoo if: brassiness isn't your primary hair concern or your hair isn't highlighted or lifted. TripleBright is specifically designed to brighten highlighted and lifted tones by reducing brass and defending against oxidative stress.

Frequently asked questions

What does K18 TripleBright Oxidation Defense Purple Shampoo do?

K18 TripleBright uses triple-action technology to remove brass-inducing metals and minerals, neutralise existing brassiness and defend against future brassiness.

Who is K18 TripleBright Purple Shampoo best for?

K18 states that TripleBright works across all hair types and textures and is designed to brighten all highlighted and lifted tones.

Is K18 TripleBright different from a traditional purple shampoo?

Yes. K18 states that TripleBright isn't a colour-depositing purple shampoo. It is designed to target the underlying cause of brassiness, including oxidation from metals and minerals in hard water, while also neutralising existing brassiness.

Does K18 TripleBright remove brass caused by hard water?

K18 states that one wash removes up to 3 months of brass from hard water.

Will K18 TripleBright turn my hair purple?

K18 states that when used as directed, its precision violet technology neutralises brassiness without overtoning or staining.

Will K18 TripleBright stain my hands or clothes?

No. K18 states that when used as directed, the non-staining foam rinses with water and won't stain your hands or clothes.

How much K18 TripleBright Purple Shampoo should I use?

K18 recommends using 2–3 pumps per application.

How long should I leave K18 TripleBright Purple Shampoo on?

Leave the shampoo on for 1–3 minutes maximum before rinsing.

How often should I use K18 TripleBright Purple Shampoo?

K18 recommends using TripleBright up to once weekly.

Does K18 TripleBright work on all hair types?

Yes. K18 states that TripleBright works across all hair types and textures.

Can I use K18 TripleBright on highlighted hair?

Yes. K18 states that TripleBright is designed to restore and even the ideal hair tone across all highlighted and lifted tones.

How does K18 TripleBright help prevent future brassiness?

Its biopolymer helps prevent metals and minerals from reattaching to the hair during washing, helping defend against future brass.