K18 Leave-In Molecular Repair Hair Mask – 1.7 oz / 50 mL

K18 Leave-In Molecular Repair Hair Mask is a concentrated, no-rinse treatment for fine, medium, or thick hair across straight, wavy, curly, and coily textures. Designed for hair stressed by bleach, color, chemical services, and heat, its patented K18Peptide™ technology works in a four-minute treatment to help restore softness, smoothness, strength, and bounce.

The peptide is designed to reach into the hair’s inner layers and reconnect broken keratin chains that contribute to strength and elasticity. In a clinical study on hair bleached eight times, results showed up to 82% restoration after two uses. Results may vary; this study reflects the stated test conditions.

Benefits

• Helps repair the look and feel of damaged hair
• Supports strength, softness, smoothness, and bounce
• Easy leave-in care with no rinsing required
• Suitable for all hair textures and color-treated hair

How to use

Shampoo and skip conditioner. Towel-dry hair until damp. Begin with about 1 mL, roughly a dime-size amount, and add more only if needed; the typical amount is about 2 mL or two dime-size portions. Distribute evenly from ends to roots, then leave in for four minutes without rinsing. After the four minutes, style as usual and add heat protectant or other styling products if desired. Use for the first four to six washes, then use as needed for maintenance.

For deep conditioning care, K18 recommends applying the mask as directed rather than rinsing it out. The 1.7 fl oz / 50 mL bottle is highly concentrated, so start with a small amount.

Fragrance

The signature scent is light and floral, with jasmine and peony notes.

Ingredients

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.

Vegan and cruelty-free. Packaging is recyclable. K18 Leave-In Molecular Repair Hair Mask is an Allure Best of Beauty award winner.

Ingredients may change; check the product packaging for the current list. Hotel Home Pillows is an independent retailer and is not affiliated with, endorsed by, or officially connected to K18 or its trademark holders. The brand name is used solely for product identification and customer familiarity. Product images are representative, and packaging may vary slightly.

Shipping Destinations: Currently shipping within the United States. International shipping may be available upon request.

Processing Time: Orders are typically processed within 2–3 business days, excluding weekends and holidays.

Shipping Costs: Rates and available delivery options are calculated at checkout.

Order Tracking: Once your order ships, you’ll receive a confirmation email with tracking information.

Delivery Issues: If your order is delayed, missing, or arrives damaged, please contact us for assistance.

For shipping inquiries, email us at sleepwell@hotelhomepillows.com.

30-Day Return Window: Return requests must be submitted within 30 days of purchase.

Store Credit Only: Approved returns are issued as store credit via email. Refunds to the original payment method are not available under the standard return policy.

Return Condition: Items must be unused, unworn, with tags attached, and in their original packaging.

Non-Returnable Items: Personal care products, sale items, gift cards, and other excluded items are not eligible for return.

Pillow Returns: Pillows removed from their original, unopened packaging cannot be returned for health and safety reasons.

Damaged or Incorrect Orders: Contact us within 3 business days of delivery and include photos of the item and packaging.

To request a return or discuss an exchange, email sleepwell@hotelhomepillows.com for approval and instructions before sending anything back.