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I'm a hairdresser with over 18 years of experience in the salon. I've trained in cutting, colouring, styling and various hair treatments. I've also completed courses in Mazella & Palmer, ghd Expert, ghd Curl Style, Not Another Salon Colour, Kerastase Ambassador Program, 365 Hairdressing, Fantastic Hairdresser Courses and L'Oreal Programs. I'm experienced in professional hair care products, diagnosing hair and scalp problems and recommending the right products. "As an Amazon Associate I earn from qualifying purchases."

K18 Leave-in Repair Mask Review Header

K18 Leave-in Molecular Repair Hair Mask is a product that promises to repair and revitalize damaged, colour-treated hair. This review article will discuss the benefits of the K18 Leave-in Molecular Repair Hair Mask for coloured-treated hair so you can decide if it’s worth trying out! We’ll also fill you in on how to use it and when to use it.

Table of Contents: K18 Treatment

K18 Leave-in Molecular Repair Review

Benefits of K18 Repair Hair Mask

This product offers a range of benefits for colour-treated hair, including;

  • Reinforces the protective layer around each strand to protect from further damage from colour treatments and heat styling tools.
  • Seals in colour so that it lasts longer/reduces the fade rate.
  • Reduces frizz and flyaways, which as a result, then improves manageability and styling.
  • Restores moisture and strength to the hair fibre.
  • Helps reduce the appearance of split ends. Remember, only a cut will get rid of them.
  • Enhances shine and lustre to your locks, which will make feel and look healthier.

K18 Peptide Technology

K18 Peptide is the key feature behind this Leave-in Molecular Repair Hair Mask. Peptides are amino acids that have been scientifically engineered to penetrate your hair’s cortex deeply and repair damage from within. This technology also helps rebalance damaged hair’s pH levels, which can help keep colour looking vibrant and healthy for longer.

What Are Peptides?

Peptides are a type of protein that is made up of amino acids. They work to repair damaged proteins in the hair, making it stronger. Peptides also help improve hair’s structure and elasticity, so it can better withstand thermal styling and environmental damage. How do Peptides help hairdressers and clients? Peptides can help provide stronger and more resilient hair, meaning that hairdressers can use less aggressive colouring techniques, such as balayage or ombré. This helps to reduce the damage caused by chemical treatments on the hair, making it healthier for longer.

How to Use K18 Leave-in Repair Mask

K18 Leave-in Molecular Repair Hair Mask is easy to use. After shampooing and conditioning your hair, apply a generous amount evenly to damp or towel-dried hair. Afterwards, you can just blow dry your hair as usual. You’ll find that blowdrying will feels easier, and the hair will detangle quicker. For best results, use one to two times per week.

Should I Also Use K18 Shampoo?

The K18 Leave-in Molecular Repair Hair Mask works best with the K18 Shampoo. The Shampoo helps to gently cleanse and prepare the hair for maximum benefit from the mask. There are two types of Shampoo. The first is K18 Petide Prep Detox which helps to prepare the hair for deeper penetration of peptides and helps to boost colour retention.

The second is K18 PH Maintenance which helps protect the vibrancy of colour-treated hair by forming a protective layer on each strand. Can I still use my Olaplex Shampoo, though? Yes, you can still use your Olaplex Shampoo. However, the K18 Shampoo is specially formulated to work synergistically with the Leave-in Molecular Repair Hair Mask to benefit from both products.

My Hair Stylist Has Never Heard Of K18

It is gaining popularity amongst hairdressers looking for an effective way to repair and protect colour-treated hair. If your stylist has never heard of it, they may be willing to try it out and see the results. Alternatively, you can purchase K18 Leave-in Molecular Repair Hair Mask online and use it at home yourself. It would be best if you also bared in mind that hairdressers are often limited to using specific brands. This can be because the salon has an agreement with one particular brand – for example, some salons will only use L’Oreal, Aveda, Wella, etc.

K18 Vs Olaplex

K18 Leave-in Molecular Repair Hair Mask is an excellent choice for restoring and protecting colour-treated hair. But how does it compare to Olaplex – another popular product for coloured hair? Both products offer similar benefits in repairing and protecting damaged, coloured hair. However, K18 has the added benefit of Peptide Technology, which helps rebalance pH levels and can even reduce damage from future colouring processes. Olaplex, on the other hand, works by restoring broken bonds but doesn’t have any additional features. However, from speaking to fellow hairdressers, I’ve discovered that many uses both on the same client. They use the Olaplex treatment in the bleach or colour as an extra in-salon service and the masque after the colour service. So, while many people think one is an alternative to the other, they complement each other and can both be used.

FAQs: K18 Leave-in Molecular Repair Mask

Q: Is K18 safe for all types of coloured hair?
A: Yes, it is safe for all types of colour-treated hair.

Q: Is K18 Leave-in Hair Mask suitable for daily use?
A: No, we recommend using the product twice a week.

Q: Is it safe to use?
A: Yes, K18 Leave-in Molecular Repair Hair Mask is free from parabens, silicones and sulphates. It has been dermatologically tested for safety and efficacy

Q: Is K18 the same as Olaplex?

A: No, while both products offer similar benefits in repairing and protecting damaged, coloured hair, K18 has the added benefit of Peptide Technology, which helps rebalance pH levels and can even reduce damage from future colouring processes. Olaplex, on the other hand, works by restoring broken bonds but doesn’t have any additional features. However, many hairdressers use both as complementary products for their clients.

Final Thoughts

K18 Leave-in Molecular Repair Hair Mask is a fantastic option for colour-treated hair because its peptide technology helps repair damaged proteins and keep your colour vibrant and healthy. This product also offers a range of benefits, such as reinforcing the protective layer around each strand, restoring moisture, improving manageability, and enhancing shine. If you’re looking for an effective way to protect your coloured hair from damage, then K18 Leave-in Molecular Repair Hair Mask should be on your radar!

Disclosure: "As an Amazon Associate I earn from qualifying purchases." We earn commissions (at no additional cost to you) if you purchase products from retailers after clicking on a link from our site. We do our very best to offer comprehensive and detailed reviews and guides, regardless of the links placed.