Key ingredients
4.6/5
The same K18 leave-in mask under a second listing. K18Peptide, bond repair.
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Leave-In Molecular Repair Hair Mask
$29.00
K18 asks for a precise application and no stacking conditioners after. When followed, it’s a strong premium repair option for high damage.
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The Edyt Score
4.6 / 5.0
Targets
4.5/5
For the same mask if this is the size in stock. Do not buy both color listings.
Formula standards
4.6/5
Same leave-in. One tube is enough.
The verdict
Buy one. This page is a duplicate.
Compare against similar products
Side-by-side vs 6 near substitutes (Olaplex, L'Oreal Paris, Redken, Briogeo, Living Proof, and Pantene) — best for, key actives, texture, skin fit, Edyt score, and notes. Swipe sideways to compare.
| Pick | |||||||
|---|---|---|---|---|---|---|---|
| Best for | K18 mask, 2nd listing | Category iconic | L’Oréal’s bond/molecular repair | Salon-backed optio | Deep mask | Mask bond repair treatment | Budget bond repair treatment |
| Key actives | K18Peptide | Bond builder | Bond-care actives | Citric · Bond-care | Rosehip · B-vitamins | Restore complex | Conditioners |
| Texture | Bond repair treatment | Bond repair treatment | Bond repair treatment | Bond repair treatment | Bond repair treatment | Bond repair treatment | Bond repair treatment |
| Skin fit | — | — | — | — | — | — | — |
| Edyt score Methodology: The Edyt Score reflects ingredient profiles, concentration, and formulation standards. It is separate from crowd-sourced user reviews. | 4.6 | 4.6 | 4.4 | 4.5 | 4.5 | 4.4 | 4.2 |
| Notes | Premium · Leave-in mask | Category iconic · Pre-shampoo | Drugstore · Accessible | Salon · Color care | Deep mask · Clean-leaning | Mask · Softness | Budget · Deep mask |
| $ / size | $29.00 | $34.00 | $17.99 | $36.00 | $39.00 | $42.00 | $12.97 |
| Shop | Buy on AmazonThis page | Buy on AmazonProduct page | Buy on AmazonProduct page | Buy on AmazonProduct page | Buy on AmazonProduct page | Buy on AmazonProduct page | Buy on AmazonProduct page |
FAQ
Who is Leave-In Molecular Repair Hair Mask best for?
K18 asks for a precise application and no stacking conditioners after. When followed, it’s a strong premium repair option for high damage.
How did Edyt Beauty score this bond repair treatment?
Edyt rates Leave-In Molecular Repair Hair Mask 4.6 out of 5 based on formula fit for at-home nail looks — who it is built for and how it performs in paint or press kits — not star averages or paid placement.
How does it compare to similar products?
The compare table above stacks Leave-In Molecular Repair Hair Mask against near substitutes for the same shopping job, including picks from Olaplex, L'Oreal Paris, Redken, Briogeo, Living Proof, and Pantene. For more from the same brand, see More from K18 below.
Where can I buy it?
Shop Leave-In Molecular Repair Hair Mask with the Buy button when it is available. We may earn a commission from qualifying purchases. Prices and availability can change. You can also find it in our guide to Best Bond Repair Treatments.
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Briogeo
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Living Proof
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Pantene
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