--- product_id: 355855500 title: "Leave-In Molecular Hair Mask, Repairs Dry or Damaged Hair, Reverse Hair Damage from Bleach, Colour, Chemical Services & Heat" brand: "k18" price: "$194.44" currency: USD in_stock: true reviews_count: 13 category: "K18" url: https://www.desertcart.us/products/355855500-leave-in-molecular-hair-mask-repairs-dry-or-damaged-hair store_origin: US region: United States of America --- # Vegan & cruelty-free formula Patented K18PEPTIDE molecular tech 4-minute fast repair Leave-In Molecular Hair Mask, Repairs Dry or Damaged Hair, Reverse Hair Damage from Bleach, Colour, Chemical Services & Heat **Brand:** k18 **Price:** $194.44 **Availability:** ✅ In Stock ## Summary > 🧬 Unlock your hair’s DNA for next-level repair! ## Quick Answers - **What is this?** Leave-In Molecular Hair Mask, Repairs Dry or Damaged Hair, Reverse Hair Damage from Bleach, Colour, Chemical Services & Heat by k18 - **How much does it cost?** $194.44 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/355855500-leave-in-molecular-hair-mask-repairs-dry-or-damaged-hair) ## Best For - k18 enthusiasts ## Why This Product - Trusted k18 brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **All Hair Types Welcome:** Soft, strong, and bouncy results for every hair texture and color. - • **Clean Beauty Commitment:** Silicone-free, vegan, and cruelty-free for guilt-free glam. - • **Instant Molecular Repair:** Transforms damaged hair in just 4 minutes—no rinse needed. - • **Clinically Proven Strength:** Restores and sustains hair damaged by bleach, color, and heat treatments. - • **Skip Conditioner, Save Time:** Shampoo, apply, wait—ditch conditioner for a streamlined routine. ## Overview K18 Leave-In Molecular Hair Mask is a 50ml professional-grade treatment that repairs and restores hair damaged by bleach, color, and chemical services in just 4 minutes. Powered by patented K18PEPTIDE technology, it works at the molecular level to rebuild hair strength and elasticity without rinsing. Suitable for all hair types, this vegan, cruelty-free formula replaces conditioner for a simplified, effective haircare routine. ## Description Shop Damage Repair Mask Shop Dry Shampoo Shop Hair Oil Review: Very happy - Very expensive product, but it has worked on my hair. I have tried so many other well known brands, not quite as expensive hair repairing treatments and my hair was still in terrible condition from bleaching, It improved while having it coloured at a hairdressers, but I was unable to afford regular visits and reverted back to colouring my self, unfortunately my hair is not great on the top from over bleaching catching other strands of hair while attempting to colour my roots only. K18 leave in treatment is really good and has helped my hair, I am telling myself it's worth it in the long run, if I add up what I have already wasted my money on so far trying products claiming to repair your hair. Very happy this product is actually helping my hair and improving the condition, it's a Shame it is so expensive though. Review: Brilliant product - I don't normally leave reviews and I would also never normally spend this much on such a small amount of product, but my hair is extremely damaged from lightening / dyes and straighteners. After one use, my hair is visibly improved and feels so much better. Highly recommend ## Features - Leave-in treatment mask delivers real, lasting repair for hair like new* in 4 minutes. Patented K18PEPTIDE works at the molecular level (where all hair is the same) for soft, strong, and bouncy results for all hair types. - Real, lasting repair powered by K18PEPTIDE. Hair like new in 4 minutes*. Soft, strong, bouncy hair for everyone - Shampoo, skip conditioner. Towel-dry thoroughly. Apply 1-3 pumps from ends to roots (3-9 pumps for 15ml sized mask). Less is more. Wait 4 minutes, do not rinse. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0961ZS96M | | Age Range Description | Adult | | Age range (description) | Adult | | Benefits | Clinically proven to repair, restore strength and sustain hair damaged by bleach, color, and chemicals. | | Best Sellers Rank | 386 in Beauty ( See Top 100 in Beauty ) 1 in Hair Masks | | Brand | K18 | | Brand Name | K18 | | Country Of Origin | USA | | Customer Reviews | 4.3 out of 5 stars 29,582 Reviews | | Global Trade Identification Number | 00858511001128 | | Hair Conditioner Type | Hair Conditioning Mask | | Hair Type | All | | Hair type | All | | Item Dimensions | 47 x 47 x 102 millimetres | | Item Form | Cream | | Item Type Name | Hair Mask | | Item Weight | 3.2 Ounces | | Item form | Cream | | Liquid Volume | 50 Millilitres | | Manufacturer | K18 | | Manufacturer Part Number | K18-31005 | | Material Features | Cruelty Free, Natural, Vegan | | Material Type Free | Silicone Free | | Material feature | Cruelty Free, Natural, Vegan | | Model Number | K18-31005 | | Number of Items | 1 | | Package Type Name | Bottle | | Product Warranty | 2 year manufacturer | | Product benefits | Clinically proven to repair, restore strength and sustain hair damaged by bleach, color, and chemicals. Product benefits Clinically proven to repair, restore strength and sustain hair damaged by bleach, color, and chemicals. See more | | Recommended Uses For Product | Repair Damaged Hair | | Scent Name | Fresh | | Size | 50 ml (Pack of 1) | | Special Features | Not Tested On Animals | | UPC | 858511001029 858511001128 729162271362 729162270877 755801147958 726929222179 729162271317 729162271249 729162271096 | | Unit Count | 50.0 millilitre | ## Product Details - **Brand:** K18 - **Hair type:** All - **Item form:** Cream - **Material feature:** Cruelty Free, Natural, Vegan ## Images ![Leave-In Molecular Hair Mask, Repairs Dry or Damaged Hair, Reverse Hair Damage from Bleach, Colour, Chemical Services & Heat - Image 1](https://m.media-amazon.com/images/I/71C7vrAyNkL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: How does the K18 mask work?** A: The K18 Mask works as a treatment to reverse damage in 4 minutes. It’s powered by our biomimetic K18PEPTIDE to seamlessly fit in and reconnect broken polypeptide chains at the molecular level. **Q: What is the K18PEPTIDE?** A: K18PEPTIDE is a biotech-developed peptide that mimics hair’s structure to reverse damage by reconnecting polypeptide chains and disulfide bonds broken during damage from bleach + colour, chemical services, and heat. **Q: Why skip conditioner?** A: Conditioner leaves a film that blocks our peptide from penetrating effectively. Once the 4-minute wait time is up, feel free to use a conditioner, a leave-in, or any type of product. **Q: I noticed there’s alcohol in the formula, isn’t that bad for you?** A: We like to keep our formulas minimal, only using the exact amount of ingredients needed to get the peptide where it needs to go. Here the alcohol serves as an agent to optimise the hair environment for the K18 Mask to work on a deeper level. **Q: When should I expect to see results?** A: Most see results after 2-3 uses. The more damaged the hair, the more dramatic the results so it may vary depending on your hair type and level of damage. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Very happy *by A***H on 5 June 2026* Very expensive product, but it has worked on my hair. I have tried so many other well known brands, not quite as expensive hair repairing treatments and my hair was still in terrible condition from bleaching, It improved while having it coloured at a hairdressers, but I was unable to afford regular visits and reverted back to colouring my self, unfortunately my hair is not great on the top from over bleaching catching other strands of hair while attempting to colour my roots only. K18 leave in treatment is really good and has helped my hair, I am telling myself it's worth it in the long run, if I add up what I have already wasted my money on so far trying products claiming to repair your hair. Very happy this product is actually helping my hair and improving the condition, it's a Shame it is so expensive though. ### ⭐⭐⭐⭐⭐ Brilliant product *by E***S on 3 June 2026* I don't normally leave reviews and I would also never normally spend this much on such a small amount of product, but my hair is extremely damaged from lightening / dyes and straighteners. After one use, my hair is visibly improved and feels so much better. Highly recommend ### ⭐⭐⭐⭐⭐ Noticeably stronger hair, but you must use it correctly *by C***N on 11 March 2026* I was very curious to try the K18 Leave-In Molecular Hair Mask because my hair has been through a lot: bleach, colour, and heat styling. After a few uses, I can honestly say it does make a difference, but it’s not exactly a miracle in one wash. First, it’s important to follow the instructions: shampoo, skip conditioner, towel-dry your hair, and apply a small amount. You really only need a tiny pump. The product feels light and not greasy, which I like, and it doesn’t weigh my hair down. After about 3–4 uses, my hair started to feel stronger and less brittle, especially on the ends where bleach damage is the worst. It doesn’t make the hair super silky like a traditional mask, but it improves the structure of the hair over time. My hair feels healthier and looks a bit smoother. The downside is the price for such a small bottle. Also, if you’re expecting instant softness like a regular deep conditioner, you might be disappointed because that’s not really what this product is designed to do. Overall, it’s a very interesting treatment for damaged hair and I can see why it’s popular. It takes consistency, but it does help improve the strength of over-processed hair ## Frequently Bought Together - K18 Leave-In Molecular Hair Mask, Repairs Dry or Damaged Hair, Reverse Hair Damage from Bleach, Color, Chemical Services & Heat - K18 Damage Shield Protective Conditioner, Protects Hair from Daily Damage, Improves Strength & Shine, 8.5 Fl Oz - K18 Damage Shield Protective Shampoo, Reduces Frizziness & Tangles, Maintains Hair Health, 8.5 Fl Oz --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/355855500-leave-in-molecular-hair-mask-repairs-dry-or-damaged-hair](https://www.desertcart.us/products/355855500-leave-in-molecular-hair-mask-repairs-dry-or-damaged-hair) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-07-07*