{"id":60746,"date":"2026-08-24T09:47:22","date_gmt":"2026-08-24T09:47:22","guid":{"rendered":"http:\/\/herstylestop.com\/?product=k18-leave-in-molecular-repair-hair-mask"},"modified":"2026-08-24T09:47:23","modified_gmt":"2026-08-24T09:47:23","slug":"k18-leave-in-molecular-repair-hair-mask","status":"publish","type":"product","link":"https:\/\/herstylestop.com\/?product=k18-leave-in-molecular-repair-hair-mask","title":{"rendered":"K18 Leave-In Molecular Repair Hair Mask"},"content":{"rendered":"


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Product description <\/p>\n

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The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked. K18 Molecular Repair Hair Mask<\/p>\n

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How does the K18 mask work? <\/p>\n<\/h3>\n

The K18 Mask works as a treatment to reverse damage in 4 minutes. It\u2019s powered by our biomimetic K18PEPTIDE to seamlessly fit in and reconnect broken polypeptide chains at the molecular level. <\/p>\n

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What is the K18PEPTIDE? <\/p>\n<\/h3>\n

K18PEPTIDE is a biotech-developed peptide that mimics hair\u2019s structure to reverse damage by reconnecting polypeptide chains and disulfide bonds broken during damage from bleach + color, chemical services, and heat. <\/p>\n

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Why skip conditioner? <\/p>\n<\/h3>\n

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. <\/p>\n

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I noticed there\u2019s alcohol in the formula, isn\u2019t that bad for you? <\/p>\n<\/h3>\n

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 optimize the hair environment for the K18 Mask to work on a deeper level. <\/p>\n

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When should I expect to see results? <\/p>\n<\/h3>\n

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. <\/p>\n

Shop the K18 Collection <\/h3>\n

Add to Cart <\/p>\n

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Customer Reviews <\/p>\n

4.3 out of 5 stars 31,715 <\/p>\n

4.5 out of 5 stars 1,644 <\/p>\n

4.6 out of 5 stars 1,680 <\/p>\n

4.6 out of 5 stars 2,593 <\/p>\n

4.5 out of 5 stars 1,731 <\/p>\n

4.4 out of 5 stars 2,109 <\/p>\n

4.3 out of 5 stars 906 <\/p>\n

Price <\/p>\n

$75.00$75.00 <\/p>\n

$65.00$65.00 <\/p>\n

$39.00$39.00 <\/p>\n

$39.00$39.00 <\/p>\n

$39.00$39.00 <\/p>\n

$48.00$48.00 <\/p>\n

$46.00$46.00 <\/p>\n

Molecular Repair <\/p>\n

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Maintenance Routine <\/p>\n

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Treatment Routine <\/p>\n

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Used By Professionals <\/p>\n

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At Home Use <\/p>\n

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Product Dimensions \u200f : \u200e 1.37 x 1.37 x 3.18 inches; 1.76 ounces
Item model number \u200f : \u200e K18-31007
UPC \u200f : \u200e 858511001289 746559900490 858511001371
Manufacturer \u200f : \u200e K18
ASIN \u200f : \u200e B09HR5KSR8
Best Sellers Rank: #113 in Beauty & Personal Care (See Top 100 in Beauty & Personal Care) #1 in Hair Treatment Masks
Customer Reviews: 4.3 4.3 out of 5 stars (31,715) var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
4-Minute Molecular Hair Repair Treatment: A leave-in peptide hair mask designed to repair and reverse damage at the molecular level for stronger, smoother, more resilient hair in just 4 minutes.
How It Works: Patented K18PEPTIDE repairs hair at a molecular level to reverse damage from bleach, color, chemical services, and heat*. The biotech-developed peptide mimics and clicks into hair’s keratin structure to reconnect polypeptide chains and disulfide bonds for strength along the length + width of hair.
Works on All Hair Types: Because our hair treatment works at the innermost layer of the hair rather than only targeting the outer cuticle like many deep conditioning hair masks, it’s effective on all strands, even coily and curly hair.
Boosts Strength + Smoothness: Helps improve texture, manageability, and bounce with a highly concentrated hair cream formula with detangling and softening benefits. Most see results after 2-3 uses.
How to Use: Shampoo, skip conditioner, and apply 1-3 pumps of the leave in hair mask to clean, towel-dried hair. Let sit for 4 minutes, do not rinse, then style as usual. Use for 4-6 consecutive washes, then as needed.
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Product description The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked. K18 Molecular Repair Hair Mask How does the K18 mask work? The K18 Mask works as a treatment to reverse damage in 4 minutes. It\u2019s powered by our biomimetic K18PEPTIDE […]<\/p>\n","protected":false},"featured_media":60747,"comment_status":"open","ping_status":"closed","template":"","meta":[],"store":[],"product_cat":[6844],"product_tag":[7005,11734,9485,7316,11735,7481],"class_list":["post-60746","product","type-product","status-publish","has-post-thumbnail","product_cat-haircare","product_tag-hair","product_tag-k18","product_tag-leavein","product_tag-mask","product_tag-molecular","product_tag-repair","first","instock","shipping-taxable","product-type-external"],"_links":{"self":[{"href":"https:\/\/herstylestop.com\/index.php?rest_route=\/wp\/v2\/product\/60746","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/herstylestop.com\/index.php?rest_route=\/wp\/v2\/product"}],"about":[{"href":"https:\/\/herstylestop.com\/index.php?rest_route=\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/herstylestop.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=60746"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/herstylestop.com\/index.php?rest_route=\/wp\/v2\/media\/60747"}],"wp:attachment":[{"href":"https:\/\/herstylestop.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=60746"}],"wp:term":[{"taxonomy":"store","embeddable":true,"href":"https:\/\/herstylestop.com\/index.php?rest_route=%2Fwp%2Fv2%2Fstore&post=60746"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/herstylestop.com\/index.php?rest_route=%2Fwp%2Fv2%2Fproduct_cat&post=60746"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/herstylestop.com\/index.php?rest_route=%2Fwp%2Fv2%2Fproduct_tag&post=60746"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}