Key ingredients
4.6/5
Leave-In Molecular Repair Mask with K18Peptide. A bond-style leave-in, not a rinse-out cream.
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Leave-In Molecular Repair Hair Mask
$29.00
K18’s leave-in mask is a treatment-first product with a short contact story and serious price. Best as a weekly repair step, not a casual detangler.
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The Edyt Score
4.6 / 5.0
Targets
4.5/5
For bleached or heat-fried hair. Skip a cheap conditioner if this is the treatment you want.
Formula standards
4.6/5
A leave-in. A little on damp hair. Do not rinse. It can feel coated if you use too much.
The verdict
A strong repair leave-in. The bleach-specific listing is the same idea with more copy.
Compare against similar products
Side-by-side vs 6 near substitutes (It's a 10, Pattern, Ouidad, Olaplex, Garnier, and Briogeo) — best for, job, weight, hair fit, Edyt score, and notes. Swipe sideways to compare.
| Pick | |||||||
|---|---|---|---|---|---|---|---|
| Best for | K18 leave-in mask | It’s a 10 Miracle Leave-In is | Pattern’s leave-in is built for curly | Ouidad’s leave-in supports curl pattern | Bond care leave-in conditioner | Garnier’s sleek leave-in is widely | Spray format that s |
| Job | K18 leave-in mask | It’s a 10 Miracle Leave-In is | Pattern’s leave-in is built for curly | Ouidad’s leave-in supports curl pattern | Bond care leave-in conditioner | Garnier’s sleek leave-in is widely | Spray format that s |
| Weight | Lightweight | Lightweight | Lightweight | Lightweight | Lightweight | Lightweight | Lightweight |
| Hair 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 | 4.6 | 4.5 | 4.5 | 4.3 | 4.5 |
| Notes | Repair · Premium | Multitasker · Cult classic | Curl-focused · Rich slip | Curl brand · Lighter cream | Bond care · Cream leave-in | Budget · Frizz | Spray leave-in · Balanced |
| $ / size | $29.00 | $16.99 | $29.00 | $26.00 | $32.00 | $8.97 | $44.00 |
| 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’s leave-in mask is a treatment-first product with a short contact story and serious price. Best as a weekly repair step, not a casual detangler.
How did Edyt Beauty score this leave-in conditioner?
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 It's a 10, Pattern, Ouidad, Olaplex, Garnier, and Briogeo. 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 Leave-In Conditioners.
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