K18 Leave In Molecular Repair Hair Mask 50ml Bond Rebuilding
Repairs Damage from Bleach, Color & Chemicals
Bring back strength, softness, and shine with the K18 Leave-In Molecular Repair Hair Mask, a biotechnology-powered treatment that works at the deepest level of the hair structure.
This breakthrough formula doesn’t just mask damage — it reverses it in just 4 minutes, reconnecting broken keratin chains and disulfide bonds to restore elasticity, bounce, and resilience.
With 20+ billion TikTok views 🔥, it’s more than a trend — it’s a scientifically proven solution for even the most extreme hair damage.
How K18 Leave In Molecular Repair Hair Mask Works
Unlike surface conditioners or oils that wash away, K18 penetrates the cortex layer of the hair to rebuild strength from within. The biomimetic peptide seamlessly fits into the hair’s natural structure to reconnect broken polypeptide chains — and as a result, disulfide bonds also realign.
- Repairs bleach + color damage
- Restores hair after chemical services
- Protects against heat styling stress
The formula is pH-optimized (5.0–6.0) to minimize cuticle swelling, lock in protein strength, and keep hair in its most resilient state.
Key Ingredients
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sh-Oligopeptide-78 (K18PEPTIDE™) – patented biotech peptide that reconnects keratin chains and disulfide bonds.
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Hydrolyzed Wheat Protein & Hydrolyzed Wheat Starch – reinforce flexibility, reduce brittleness.
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Glycerin – locks in hydration for lasting smoothness.
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Isopropyl Myristate – aids absorption of active ingredients deep into the cortex.
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Quick-dry alcohol blend – opens cuticle pathways so peptides can penetrate effectively.
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Vitamin E (Tocopherol) – antioxidant protection for healthier strands.
Key Benefits of Leave In Molecular Repair Hair Mask
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Deep Molecular Repair for Damaged Hair – This hair treatment penetrates the inner cortex which rebuilds broken keratin chains that work at a molecular repair level to restore strength and flexibility of your hair.
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Advanced Bond Reconstruction Technology – Unlike surface treatments, this bond-building hair mask reconnects polypeptide chains, disulfide bridges, ionic and hydrogen bonds and offer a structural recovery over the entire hair shaft — from root strength to split end resilience.
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Fast-Acting Results with Progressive Repair – You can see a visible transformation in just 4 minutes of leave-in treatment, while continued use delivers long-lasting elasticity, bounce, and salon-grade smoothness. Perfect for anyone seeking intensive repair mask solutions that go beyond temporary fixes.
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Strength Restoration & Cuticle Defense – This mask reinforces weakened hair bonds and seals the outer cuticle layer. It helps reduce breakage, smooth frizz, and visibly mend split ends in such a way that even the most over-processed, chemically treated hair feel stronger and more resilient.
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Softness, Shine & Manageability – The formula delivers silky touch, lightweight shine, and frizz control without heaviness, ensuring the hair feel detangled and salon-finished. Great for maintaining a healthy bounce and natural glow across all textures.
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Universal Hair Compatibility – This peptide-based repair mask treats all hair types equally — making it safe for bleached, dyed, or chemically processed hair. So whether you have fine, thick, curly, coily, straight, or textured strands this mask works totally well because of its molecular-level science.
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Simplified One-Step Leave-In Formula – Skip extra conditioners and complicated rituals — simply apply, wait, and style. This easy-to-use hair mask acts as an at-home salon repair treatment, minimizing your time while maximizing hair bond repair efficiency.
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Clean, Conscious & Biotech-Driven Formula – Formulated and developed through biotech innovation, the mask is color-safe, silicone-free, and paraben-free. Lightweight yet powerful, it offers a sustainable, high-performance haircare solution trusted by both professionals and everyday users.
How to Use This Hair Mask
👉 Use after every wash for the first 4–6 washes, then maintain with 1–2 times per week.
- Shampoo only – skip conditioner (it can block absorption).
- Towel-dry thoroughly.
- Apply 1–3 pumps based on hair length and density, starting at ends and working up.
- Wait for just 4 minutes – do not rinse out.
- Comb - add styling products if needed, and style as usual.
More Things to Know
- Lightweight cream format – spreads easily and detangles while softening.
- No heavy residue – the alcohol base optimizes cuticle opening for peptide penetration, then evaporates.
- Minimal ingredients, maximum effect – each component is chosen to get the peptide exactly where it needs to go.
- Eco-conscious – recyclable packaging, cruelty-free standards, and biotech-driven development.
Dos and Don’ts
DO
- Clarify hair before use if heavy buildup or mineral deposits exist.
- Apply on clean, damp hair.
- Wait the full 4 minutes before combing or adding other products.
- Use consistently for the first 4–6 washes for maximum results.
DON’T
- Use conditioner before applying (it blocks penetration).
- Rinse out the mask.
- Over-apply — less is more.
FAQs
Q1: How does K18 Hair Mask work?
A: It uses biomimetic peptide science to fit seamlessly into hair structure, reconnecting polypeptide chains broken during bleach, color, chemical services, or heat styling.
Q2: Why skip conditioner before using?
A: Conditioner leaves a coating that can block peptide penetration. After the 4 minutes, you can add conditioner or styling products if needed.
Q3: Is alcohol in the formula harmful?
A: No — the unique alcohol blend optimizes the cuticle environment so the peptide can reach broken bonds. It evaporates, leaving no residue.
Q4: When will I see results?
A: Most users notice softer, smoother hair within 2–3 uses. Severely damaged hair may show even more dramatic transformations over time.
Q5: Does K18 repair split ends?
A: Yes — it smooths and seals the cuticle, reducing visible splits and preventing future fraying.
Q6: Is it safe for color-treated or bleached hair?
A: Yes. K18 is specifically designed to reverse damage from bleach, dye, chemical services, and heat.
Final Words
The K18 Leave-In Molecular Repair Hair Mask is more than a trend — it’s a scientific breakthrough in restorative beauty. With patented peptide technology, clinically proven molecular repair, and eco-conscious luxury formulation, it offers a solution that’s as powerful as it is simple.
In just 4 minutes, restore what was once thought irreparable — and give your hair the strength, shine, and resilience it deserves.