K18 Damage Shield Protective Conditioner for Damaged Hair — 8.5 fl oz, Color-Safe + 3-Day Protection

K18 Damage Shield Protective Conditioner is a lightweight, color-safe conditioner that softens, detangles and protects hair from UV, pollution and mechanical styling for up to three days.

This conditioner is formulated to sit comfortably in your daily routine between deeper K18 treatment mask sessions. It uses the brand’s patented K18PEPTIDE to help replenish protein lost during washing while strengthening the hair’s external lipid barrier. The result is smoother, shinier hair that resists everyday wear from sun exposure, brushing and environmental pollutants without heavy silicones or waxes.

How does this conditioner protect hair during everyday styling?

K18 Damage Shield provides a protective layer that helps reduce damage from mechanical styling—such as brushing, heat tools and towel-drying—by fortifying the hair surface and making strands more resilient. It’s lightweight, so it won’t weigh color-treated hair down or leave a buildup that dulls shine. Use after shampooing to lock in softness and reduce friction before styling.

• Contains K18PEPTIDE to replenish protein lost in the wash.
• Fortifies the exterior lipid barrier for improved resilience.
• Formulated without film-forming silicones or waxes to avoid buildup.

Will it keep color-treated hair looking vibrant?

Yes—this conditioner is color-safe and pH-optimized to minimize excess cuticle swelling, which can help preserve color vibrancy and shine. The conditioning action smooths the cuticle layer so light reflects more evenly, enhancing gloss without compromising color molecules.

• pH-balanced to maintain cuticle integrity and shine.
• Color-safe formulation that won’t strip or fade treated hair when used as directed.
• Weightless conditioning prevents drag that can speed color loss.

How long does protection last and what does it cover?

The formula is designed to defend against common daily stressors for up to three days, including UV exposure, pollution deposits and routine mechanical styling. Laboratory simulations show improved performance in protein condition and reduced pollution build-up over a simulated three-day period, making it a practical daily shield between deeper treatments.

• Protects against UV and environmental aggressors for up to 3 days.
• Reduces simulated pollution deposits on the hair surface.
• Helps maintain protein integrity after shampooing and styling sessions.

How does it feel and perform on different hair types?

The conditioner is formulated to be lightweight and non-greasy, offering slip for detangling and a soft, smooth finish without coating the hair. It works on fine to coarse hair: fine hair benefits from the non-weighty protection, while thicker or textured hair gains added manageability and reduced breakage during styling.

• Softens and detangles without heavy residues.
• Suitable for fine, medium and coarse textures, including color-treated hair.
• Helps reduce breakage during combing and heat styling.

Who is this for? K18 Damage Shield Protective Conditioner is aimed at anyone who wants daily conditioning that also defends against the routine causes of hair wear—people with color-treated hair, those who style frequently with heat or brushes, commuters exposed to pollution and sun, and anyone seeking a lightweight conditioner that maintains gloss, softness and strength between professional or at-home K18 repair treatments.

Ingredients

Water (Aqua) (Eau),Isopropyl Palmitate,Stearyl Alcohol,Propanediol,Isopentyldiol,Behentrimonium Chloride,Tocopherol,Tocopheryl Acetate,sh-Oligopeptide-78,Alteromonas Ferment Extract,Prunus Amygdalus Dulcis (Sweet Almond) Oil,Simmondsia Chinensis (Jojoba) Seed Oil,Phospholipids,Jojoba Esters,Calcium Gluconate,Hydroxypropyl Guar Hydroxypropyltrimonium Chloride,Ceramide NP,Phytosteryl/Isostearyl/Cetyl/Stearyl/Behenyl Dimer Dilinoleate,Polyquaternium-16,Stearalkonium Chloride,Isopropyl Alcohol,Butylene Glycol,Gluconolactone,Phenoxyethanol,Sodium Benzoate,Citric Acid,Sodium Hydroxide,Fragrance (Parfum),Hydroxycitronellal.