K18 Holiday Repair Protect & Smooth Kit

The K18 Holiday Repair, Protect + Smooth Kit is a limited-edition, three-piece haircare gift set designed to repair damaged hair, protect against heat styling, and restore softness, strength, and shine. Powered by K18's patented K18PEPTIDE™ technology, this salon-quality collection combines the bestselling Leave-In Molecular Repair Hair Mask, HeatBounce Conditioning Heat Protectant, and Molecular Repair Hair Oil to help reverse damage caused by bleaching, colouring, chemical treatments, and heat styling. The four-minute molecular repair treatment works to restore strength and elasticity, while the lightweight heat protectant shields strands from temperatures up to 450°F (232°C). The reparative hair oil completes the routine by smoothing frizz, enhancing shine, and improving manageability without unnecessary heaviness. Suitable for all hair types and textures, including straight, wavy, curly, and coily hair, this travel-friendly set features limited-edition packaging with colourful molecular artwork by artist Jen Stark. Perfect for discovering K18, maintaining healthy-looking hair while travelling, or gifting someone a complete hair repair routine.

What's Included:

• K18 Leave-In Molecular Repair Hair Mask (15 ml) – A concentrated, four-minute leave-in treatment powered by patented K18PEPTIDE™ technology to help repair damage from bleaching, colouring, chemical processing, and heat styling while improving strength and elasticity.

• K18 HeatBounce Conditioning Heat Protectant (47 ml) – A lightweight conditioning treatment featuring resilicore™ heat-shielding technology to protect hair against temperatures up to 450°F (232°C), while detangling, softening, and improving manageability.

• K18 Molecular Repair Hair Oil (10 ml) – A lightweight, reparative hair oil formulated with K18PEPTIDE™, avocado oil, sunflower oil, and squalane to help address damage, reduce frizz, smooth flyaways, and enhance shine.

How to Use + Best For

Begin by shampooing the hair thoroughly, skipping your regular conditioner before applying the K18 Leave-In Molecular Repair Hair Mask. Gently towel-dry hair to remove excess water, then apply 3–9 pumps of the 15 ml mask, adjusting the amount based on hair length, density, and texture. Distribute evenly from the ends upward, concentrating on areas experiencing damage or breakage. Allow the treatment to work for four minutes before applying additional products. Do not rinse out.

After the four-minute processing time, apply HeatBounce Conditioning Heat Protectant evenly throughout damp hair, working in sections to ensure consistent coverage. Gently distribute using your fingers, a comb, or a brush until the hair feels soft and detangled without becoming overly coated. Blow-dry or style as desired. HeatBounce can also be applied to dry hair before using hot styling tools.

Finish by applying 1–3 drops of K18 Molecular Repair Hair Oil through the mid-lengths and ends of damp or dry hair, adjusting the amount according to hair thickness and density. When using the oil on damp hair for its reparative benefits, allow four minutes before styling. Apply a small additional amount to dry hair as a finishing treatment to smooth frizz, control flyaways, and enhance shine.

Suitable for all hair types, textures, and porosities, particularly dry, damaged, colour-treated, or chemically processed hair experiencing breakage, frizz, or reduced elasticity. Especially beneficial for high-porosity hair affected by chemical or heat damage, while fine or low-porosity hair can also benefit when products are applied sparingly.

Take Khair Tip: For the best results, always allow the K18 Leave-In Molecular Repair Hair Mask to work for the full four minutes before applying your heat protectant or hair oil. Unlike a traditional conditioning mask, K18 is designed to target structural damage within the hair, so applying conditioner beforehand can interfere with the treatment's penetration. For fine or low-porosity hair, start with minimal product and gradually build as needed to maintain softness and movement without weighing down the strands. When using the Molecular Repair Hair Oil, concentrate on the mid-lengths and ends, particularly areas prone to dryness, frizz, or breakage.

Key Benefits: Repairs damage from bleaching, colouring, and heat styling • Strengthens weakened strands • Helps reduce breakage • Improves hair elasticity and resilience • Provides heat protection up to 450°F (232°C) • Reduces frizz and flyaways • Enhances shine and softness • Improves detangling and manageability • Helps smooth the appearance of damaged ends • Lightweight, non-greasy finish • Suitable for all hair types • Travel-friendly sizes • Limited-edition holiday packaging • Ideal for gifting

Best For: All hair types and textures • Straight, wavy, curly, and coily hair • Fine, medium, and coarse strands • Low, medium, and high porosity hair • Particularly damaged or weakened hair • Bleached or colour-treated hair • Chemically processed hair • Heat-damaged strands • Breakage-prone hair • Frizz-prone hair • Hair lacking elasticity and shine • Hair needing structural repair and heat protection • Travel and gifting

Key Ingredients: K18PEPTIDE™ (sh-Oligopeptide-78) • Resilicore™ Heat-Shielding Technology • Hydrolyzed Wheat Protein • Hydrolyzed Barley Protein • Avocado Oil • Sunflower Seed Oil • Squalane • Tocopherol (Vitamin E) • Rice Bran Extract

Full Ingredients:

K18 Leave-In Molecular Repair Hair Mask: 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.

K18 HeatBounce Conditioning Heat Protectant: Water (Aqua) (Eau), Cellulose Gum, Isopentyldiol, Propanediol, Cetearyl Alcohol, Isopropyl Palmitate, Sodium Benzoate, C13-15 Alkane, sh-Oligopeptide-78 s-Fruit Fly Oligopeptide-1, (sh-Oligopeptide-78 s-Fruit Fly Oligopeptide-1) Peptides, Laurdimonium Hydroxypropyl Hydrolyzed Barley Protein, Helianthus Annuus (Sunflower) Seed Oil, Oryza Sativa (Rice) Bran Extract, Helianthus Annuus (Sunflower) Extract, Rosmarinus Officinalis (Rosemary) Leaf Extract, Tocopherol, Behentrimonium Chloride, Brassicatrimonium Chloride, Gluconolactone, Arginine, Coco-Glucoside, Lactic Acid, Cellulose, C12-20 Alkyl Glucoside, Citric Acid, Potassium Sorbate, Benzyl Alcohol, Isopropyl Alcohol, C14-22 Alcohols, Fragrance (Parfum), Amyl Salicylate, Benzyl Salicylate, Citronellol, Citrus Aurantium Peel Oil, Dimethyl Phenethyl Acetate, Geraniol, Geranyl Acetate, Isoeugenyl Acetate, Limonene, Linalool, Linalyl Acetate, Pinene, Tetramethyl Acetyloctahydronaphthalenes, Vanillin.

K18 Molecular Repair Hair Oil: Caprylyl Caprylate/Caprate, Squalane, Persea Gratissima (Avocado) Oil, Helianthus Annuus (Sunflower) Oil, C13-15 Alkane, Undecane, Benzyl Alcohol, Tridecane, Castor Isostearate Succinate, Propanediol, sh-Oligopeptide-78, Fragrance (Parfum), Tocopherol, Cinnamal, Hexyl Cinnamal, Limonene, Linalool.

Please note: Ingredients may change without notice. Always refer to the individual product packaging for the most accurate and up-to-date ingredient information.

• Shipping Area: We currently ship within Canada.
• Free standard shipping on orders over $70.
• $9.99 standard shipping for orders under $70 in Ontario.
• $14.99 standard shipping for orders under $70 for the rest of Canada.
• Shipping Calculation: Shipping costs are calculated after discounts have been applied and before tax is added.
• Order Processing Time: Please allow 1-3 business days for order processing, excluding weekends and holidays.
• Shipping Time: Delivery within 3-5 business days from the shipment date.