Product Review
Leave-In Molecular Repair Hair Mask | Manufacturing and Formulation Insights
This page provides an ingredient-level review of Leave-In Molecular Repair Hair Mask by K18. Below you’ll find the publicly available ingredient list, a dynamic ingredient breakdown linked to the FormuNova ingredient database, and a formula structure overview intended for cosmetic founders, product developers, and brand teams researching competitor product architecture in modern hair masks and related Beauty & Personal Care categories. This page is a formulation and manufacturing review and does not imply or state any association between FormuNova and K18.
Water (Aqua) (Eau), Alcohol Denat, Propylene Glycol, Cetearyl Alcohol, Dicaprylyl Ether, Cetyl Esters, Behentrimonium Chloride, Polysorbate 20, SH-Oligopeptide-78 (K18Peptide™), Hydrolyzed Wheat Protein, Hydrolyzed Wheat Starch, Isopropyl Alcohol, Tocopherol, Phenoxyethanol, Potassium Sorbate, Citric Acid, Fragrance (Parfum), Geraniol, Linalool, Hexyl Cinnamal, Benzyl Alcohol
Formulation Deep Dive
K18's Leave-In Molecular Repair Hair Mask is formulated as a high-performance bioactive treatment designed to restore hair elasticity and strength at the molecular level. The carrier system utilizes a blend of water, alcohol denat, and propylene glycol to facilitate deep penetration of actives, while cetearyl alcohol and dicaprylyl ether provide a lightweight, emollient texture without heavy residue. The core performance is driven by SH-Oligopeptide-78 (K18Peptide™), which works alongside hydrolyzed wheat protein and hydrolyzed wheat starch to reinforce the hair's structural integrity and moisture retention. The formulation is stabilized with behentrimonium chloride and polysorbate 20, utilizing a preservation system of phenoxyethanol and potassium sorbate to ensure long-term efficacy and microbial stability.
Formula Structure Overview
This formula has a 29% match with ingredients from our research database. Among the matched ingredients, the main functional themes identified are categorized as moisturizer, emollient, conditioner, and barrier support ingredients.
Barrier Support
Ingredient Analysis
About our ratingsThe manufacturing partners for K18 are not publicly disclosed. Many brands work with multiple contract manufacturers across different regions depending on production volume, product type, and regulatory requirements.
Exact sales numbers for K18 are not publicly disclosed.
K18 has successfully captured market share by focusing on a successful balance of marketing and formulation.
Replicating that success requires more than just copying a formula, it requires identifying a marketing strategy that is unique to your brand’s audience, associated with a great product offering.
At FormuNova, we specialize in helping brands move past imitation to create high-performance product offerings with potential to outperform the current market leaders. Let’s discuss your launch strategy.
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This page provides an independent ingredient analysis of publicly available cosmetic products for research purposes. All trademarks, brand names, and product names are the property of their respective owners. FormuNova does not claim to be affiliated with, endorsed by, or sponsored by the brands mentioned on this page. Product images, when shown, are used solely for identification and commentary under fair use principles.
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