K18 HAIR
Discover K18 Hair, the professional-loved, science-backed haircare brand specialising in molecular repair for damaged hair. Powered by patented K18PEPTIDE™ technology, K18 reverses visible damage caused by bleach, colour, chemical treatments and heat to restore your hair’s strength, softness and shine.
Discover K18 Hair, the professional-loved, science-backed haircare brand specialising in molecular repair for damaged hair. Powered by patented K18PEPTIDE™ technology, K18 reverses visible damage caused by bleach, colour, chemical treatments and heat to restore your hair’s strength, softness and shine. From the bestselling K18 Leave-In Molecular Repair Hair Mask to the K18 Molecular Repair Hair Oil, K18’s vegan and cruelty-free formulas are suitable for all hair types and textures.
About K18
K18 was founded in 2020 by Suveen Sahib, who worked in labs with bio scientists for 10 years to understand the science behind our hair. Focussed on a “less is more” approach, Sahib saw an opportunity to bring new technology to the haircare industry with the brand’s patented K18PEPTIDE™ protein. His mission is to break the cycle and repair damaged hair without having to compromise on expressing yourself through your hair.
After launching in 2020, the K18 Hair Mask quickly became a best-seller loved by professionals in the salon and consumers alike. Other hero products include the K18 Damage Shield pH Protective Shampoo and Conditioner, K18 Dry Shampoo and K18 Molecular Repair Hair Oil, which are all suitable for every hair type.
Who is K18 For
K18 is suitable for anyone experiencing dryness and breakage caused by bleaching, colouring, chemical services or heat styling. Designed for all hair types and textures, it’s ideal for those looking to repair and strengthen their hair while maintaining softness, shine and manageability. All K18 treatments are vegan, cruelty-free, plastic net-zero, silicone-free, sulphate-free and paraben-free. K18 is ideal for those seeking a simple yet effective routine.
Why Space NK Loves K18
We love K18 for its innovative biomimetic hair science and results-driven formulas that work quickly and effectively. The brand’s hero Hair Mask is so easy to use and helps reverse damage in just four minutes! A streamlined addition to any routine, it is suitable for all hair types and textures.
Your Questions, Answered
K18 is a biotechnology-powered haircare brand best known for its patented K18Peptide™ protein that is found in every product and works to repair visible damage caused by bleach, colour, chemical services and heat styling on a molecular level.
The magic of K18 lies in its patented peptide technology. Unlike traditional conditioners that simply coat the surface, the K18 peptide is powered by biomimetic science designed to reconnect broken keratin chains within the hair’s inner structure.
When hair is damaged by bleach, colour, chemical treatments or heat styling, those chains break down, leaving strands weak, brittle and prone to snap. The K18 peptide is small enough to penetrate deep into the cortex, helping to restore strength, softness and elasticity in just four minutes.
To use the K18 Hair Mask, shampoo your hair and skip conditioner, then towel-dry thoroughly before application. Apply 1–3 pumps of the hair mask, depending on your hair length and thickness, starting at the ends and working up towards the mid-lengths of your hair.
Leave the mask on for four minutes to activate, do not rinse it out. After four minutes, comb through, apply any additional styling products, like the K18 Molecular Repair Hair Oil, and style as usual. For best results, use the K18 mask for the first 4–6 consecutive washes, then reduce to once every 3–4 washes for maintenance.
Yes, K18 is highly effective for repairing chemically treated, bleached or heat-damaged hair, making it ideal for anyone who wants more than just surface-level conditioning.
Its patented molecular repair technology penetrates deep into the hair cortex to reconnect broken polypeptide chains, addressing damage caused by chemical services like bleaching and colouring as well as heat styling. This internal repair restores hair health, leaving strands stronger, smoother, softer and more manageable while improving resilience, shine and bounce.
