Meet the K18 hair essentials Your Routine Needs

Best K18 hair products | Space NK
While there's no doubt that you’ll have heard great things about the bestselling K18 Leave-In Molecular Repair Hair Mask or style reviving K18 Dry Shampoo, K18 Hair is one of those brands that slips under the radar all too often. While you may have tried one or two products from K18, it's absolutely worth exploring the range and building out your entire routine, particularly if repairing damage is top of your priority list.

Powered by the patented K18PEPTIDE™ complex, each and every K18 product helps to repair bonds broken by excess heat styling, bleaching or environmental stresses. What’s K18PEPTIDE™ made up of? It’s a string of amino acids that mimic the structure of keratin, which is the protein that makes up your hair. By replicating keratin, K18PEPTIDE™ helps to repair and strengthen your hair. In short, K18 is capable of restoring your hair's health no matter what bleach, heat or environmental damage you put it through.

What we love most about this haircare range is how straightforward it is. With a tightly edited collection of targeted essentials, including the cult K18 Leave-In Molecular Repair Hair Mask and everyday staples like the Heatbounce Conditioning Heat Protectant, the brand keeps hair repair simple. We’ve outlined each step of your K18 routine and how it works, from the K18 shampoo and conditioner to the K18 Hair Oil.

The Ultimate K18 Hair Care Routine

01

K18 HAIR

Leave-in Molecular Repair Hair Mask, € 29,00

K18’s Iconic Mask
K18's bestselling hair mask needs no introduction. Packed with the K18PEPTIDE™, this leave-in treatment helps to repair and strengthen your hair, strand by strand. Polypeptide chains which are broken by bleach and heat damage are reconnected inside the hair shaft, resulting in stronger, shinier, bouncier hair after just one use. The best part is, you don't even have it condition your hair or rinse out the mask, cutting down your shower time dramatically.

When to use: Initially, use this mask instead of your conditioner for four consecutive washes. Then, use as a nourishing treatment as and when you feel your hair needs it. We like to use it once a week or so.

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02

K18 HAIR

PEPTIDE PREP™ detox shampoo, € 41,00

The Nourishing Detox Shampoo
This caring, clarifying shampoo serves as an occasional detox to rid your hair of excess oil, sebum and product build up that can clog your hair follicles. To avoid drying out your scalp, it's infused with the all-important nourishing K18PEPTIDE™ which keeps your hair and scalp's pH nicely balanced. It's particularly important for dry shampoo users to detox with a clarifying shampoo.

When to use: Depending on your needs, use this every week or every few. Your hair is in the best position to absorb a treatment after a detox cleanse, so follow up with the K18 Leave-In Molecular Repair Hair Mask. Use the Damage Shield Protective Shampoo as your everyday cleanse.

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03

K18 HAIR

AirWash™ Dry Shampoo, € 26,00

The Weightless Dry Shampoo
Unlike most of the dry shampoos on the market, K18’s is a non-aerosol spray formulated without starch. This lightweight spray uses translucent mineral microbeads to soak up excess oil and leaves your hair feeling and smelling fresh for up to three days post application! Simply spray on the roots and massage in.

When to use: Use whenever you don't have time to wash your hair. You can also add moisture to the ends of your hair with a few drops of the K18 Leave-In Molecular Repair Hair Oil.

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04

K18 HAIR

Damage Shield Ph Protective Shampoo, € 41,00

The Everyday Shampoo
The Damage Shield shampoo is gentle enough for everyday use, whenever you aren't using your clarifying K18 PEPTIDE PREP detox shampoo. It's formulated to match your hair's optimal pH level to maintain a healthy scalp barrier and it's safe for coloured hair, curly hair, straight hair and fine hair.

When to use: Use this whenever you need to wash your hair. Follow up with the matching conditioner for best results!

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05

K18 HAIR

Damage Shield Protective Conditioner, € 41,00

The Everyday Conditioner
The Damage Shield Conditioner works alongside the shampoo to protect your hair from future damage that may occur from the sun, heat styling or free radicals in your environment for up to three days after wash day. Suitable for all hair types, it also replenishes the proteins that are lost during washing to make your hair feel soft, shiny and healthy.

When to use: Use this as your regular, everyday conditioner after the K18 Damage Shield pH Protective Shampoo. If your hair feels particularly dry with prominent split ends, it probably needs a more intensive treatment, so swap to the K18 Leave-In Molecular Repair Hair Mask.

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06

K18 HAIR

Molecular Repair Hair Oil, € 28,00

The Game-Changing Hair Oil
If you’re looking to nourish dry, frazzled ends or smooth frizz, K18’s hair oil is a must-have. The lightweight formula helps to condition hair without leaving it feeling greasy or weighed down. We recommend warming a couple of drops up in the palms of your hands and combing through your hair.

When to use: Use your hair oil after every wash, before you style to protect from heat damage. Apply from the mid-lengths to the ends of your hair to reduce the appearance of dryness and split ends. If you're styling dry hair and want to smooth and hydrate, you can add a few drops to the ends too! We love smoothing the ends of a slick back pony tail with this oil.

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07

K18 HAIR

HeatBounce Conditioning Heat Protectant, € 26,00

The Shine-Boosting Heat Protective Spray
We saved the best until last. If you’re someone who can’t live without their curling tongs, this heat protection spray is essential. Providing a shield to heat up to 232C while also helping to condition hair and boost shine, this multitasking spray is an all-round hero.

When to use: Apply to wet or dry hair every single time you're about to style with heat or sunbathe. Trust us, your hair will thank you for it.

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Read More

The Best Clarifying Shampoos
The Best Hair Oils for Smooth, Shiny Hair
The Best Hair Products for Volume
Posted: Monday, 28 July 2025

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