A travel-size molecular treatment for damaged or chemically treated hair, used as a rinse-out mask or leave-in to rebuild strength, elasticity and shine.
K18 Retail Mask & Leave In Treatment 15ml delivers molecular repair for all hair types. This all-in-one hair mask uses patented K18Peptide™ to repair damaged, brittle, and chemically treated hair, while also serving as a lightweight leave-in for ongoing protection and shine. The K18 hair mask is essential for anyone looking to restore their hair's health.
Key Benefits and Features
Hydration - Deeply nourishes and seals in moisture for softer, smoother, frizz-free hair. The K18 Retail Mask & Leave In Treatment ensures optimal hydration, making it a top choice for those seeking a deep conditioning hair mask.
Molecular Repair - Patented K18Peptide™ targets damaged keratin bonds, reversing breakage from the inside out. This molecular hair repair technology is what sets the K18 hair mask apart from other treatments.
Strength & Elasticity - Reinforces hair structure to reduce snap and brittleness after chemical processing. Users will notice improved hair strength and elasticity with regular use of this leave in hair treatment.
Versatility - Functions as both a rinse-out mask and a leave-in treatment for convenient, all-in-one care. This versatility makes the K18 Retail Mask & Leave In Treatment a must-have for anyone looking for effective hair repair.
All Hair Types - Ideal for damaged, brittle, or chemically treated hair while remaining suitable for everyone. The K18 hair mask is designed to cater to all hair types, ensuring that everyone can benefit from its restorative properties.
Travel-Ready Size - Compact 15ml bottle makes it easy to try the system or use on the go. Perfect for those who want to maintain their hair care routine while traveling.
Who It’s For
Designed for all hair types, especially those with damage from chemical treatments, coloring, heat styling, or environmental stress. The dual-use formula is ideal for anyone seeking molecular repair without weighing hair down; use as a mask for deeper repair or as a leave-in for daily protection on damp hair. The K18 Retail Mask & Leave In Treatment is perfect for individuals looking for a reliable hair repair treatment.
Key Ingredients
K18Peptide™ - Patented molecular repair peptide that targets damaged keratin bonds, restoring strength, elasticity, and shine from within. This key ingredient is what makes the K18 hair mask so effective.
Delivery-Technology - Integrated system enabling rapid activation of repair properties for both mask and leave-in use. This technology ensures that the benefits of the K18 Retail Mask & Leave In Treatment are delivered quickly and effectively.
Moisture-Retention Base - Helps lock in hydration to keep hair looking smooth and manageable between washes. This feature is essential for maintaining healthy hair, especially for those using color protection shampoo.
How to Use
Begin with clean, towel-dried hair (use your regular shampoo and rinse thoroughly).
Apply the K18 Mask to mid-lengths and ends, distributing evenly. Leave on as directed on the package to activate molecular repair.
Rinse thoroughly if using as a mask.
Apply a small amount of the Leave-In Treatment to damp hair, focusing on mid-lengths to ends. Do not rinse.
Style as usual. For best results, pair with other products in the K18 system or your preferred smoothing/shaping products. This combination will enhance the effectiveness of the K18 hair mask.
Professional guidance, honest answers and the details that matter.
Delivery without the guesswork
Spend R390 and delivery is on us. Orders under R390 are delivered for R67. We normally pack within 1 working day, with delivery in 2–5 working days depending on your location.
Changed your mind? You have 7 days after receiving your order to request a return. Email hello@partnershair.co.za to get started.
Why shop it at Partners Hair
Professional haircare is only as good as the source. We buy through official South African distribution, so every item is genuine, authorised stock.
Behind the store are 250+ working stylists across 24 Cape Town salons. Need help choosing? Visit Ask the Experts for real advice from the salon floor.
Why professionals trust Partners
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Four decades of hands-on hair expertise behind every recommendation.
Advice from 250+ working stylists
The products online are the products our teams reach for in 24 salons every day.
Only authentic professional stock
Authorised products sourced through official South African distribution.
Customer Reviews
Overall rating: 4.8 / 5 from 54 reviews.
Great product, perfect for my damaged dry 3C hair, further damaged by peroxide bleaching. Definitely recommend trying this one👍 .
The k18 nd the Moyoko hair dryer is absolutely amazing 👌 iv just purchased the 50ml k18 nd the k18 astro lift👌👌👌 absolutely amazing products..i am a customer for life 🤞
I have been using the K18 Leave-In Hair Mask for the past 4 weeks, and I can truly see a difference in my hair. My hair feels shinier, thicker, and healthy without feeling weighed down. I would definitely recommend this product to anyone looking to improve their hair’s strength and shine.
Use as instructed and you wont go wrong :) OMW I am a relaxed and colour treated girl and this product is the girl she thinks she is! I am on week 2 now - it is very very helpful to my damaged hair
So I have had 1 wash day, the texture and feel of my hair feels different. In a good way. I can see it’s working. I have bad split ends and I relax my hair. So this is what my hair needs. Looking forward to this bond repair journey
This was the first time I used the product but will certainly not be the last - it made my hair feel soft and manageable and I'm certain the next use will be even better now that i've had a brazilian treatment as well.
Really had chemical damage with bleach hair after I permed. It was like "chappie" and very damaged and dry - But after only three K18 applications and Marc Anthony Stricly Curls product the difference is unbelievable! This should be a household product for chemically treated hair. Love IT@K18!!!!
I've wanted to purchase K18 for a while now, and was happy to find it at Partners for a good price. I received the package quickly and will order again
I have 4a type of hair and I must say after the 3rd use I could really see the diffrence. In fact after the 1st wash already my hair felt softer, and after 3rd wash the shine and softness is amazing. Still to see whether there will be less breakage.
My hair was chemically damaged and ends were splitting. After using after 6 consecutive washes, I could see a remarkable difference in the condition of my hair. I am very happy with this product.
I call it my MiRaCaL 🔥 mask .. I have highlights every 6 to 8 weeks & it tends to go dry ..& it needs loads of moisture..With this mask it's like a salon treatment at home .my hair was super soft .. hydrated wih loads of shine 😍👌🔥 IL definitely buy it again 👌