K18 Damage Shield Protective Conditioner — Daily Lightweight Conditioner 8.5 fl oz with K18PEPTIDE for UV & heat protection

K18 Damage Shield Protective Conditioner is a daily conditioner that defends hair from UV, pollution, and styling wear while improving strength, smoothness, and shine for up to three days.

This lightweight conditioner is formulated to protect hair between K18 treatment mask sessions by restoring lost protein with the brand’s patented peptide technology and reinforcing the hair’s lipid barrier. The pH-balanced formula smooths cuticle swelling, detangles without silicones or waxes, and leaves hair more resilient against everyday stressors. It’s designed for daily use and for people who want protection without buildup or weighted-down strands.

How does this conditioner protect hair during everyday styling?

K18 Damage Shield creates a protective layer that reduces the impact of mechanical styling tools, brushing, and environmental stress for up to 72 hours. By replenishing protein and strengthening the outer lipid layer, it helps hair resist breakage and frizz between deeper repair treatments.

• Contains K18PEPTIDE to restore protein lost from washing
• Reinforces exterior lipid barrier to improve resilience
• Designed to reduce breakage from brushing and heat-styling

Will this conditioner make hair feel heavy or cause buildup?

The formula avoids film-forming silicones and waxes, so it conditions and detangles without leaving residue that weighs hair down. Its pH-optimized design minimizes excess cuticle swelling, maintaining smoothness and natural movement.

• Silicone- and wax-free for lightweight conditioning
• pH-balanced to preserve smooth cuticle alignment
• Detangles hair while preserving natural bounce

Can it help hair look shinier and healthier day-to-day?

Yes—the conditioner reduces cuticle disruption and smooths the hair surface to maximize light reflection and visible shine. Regular use between K18 mask treatments supports a more uniform surface and healthier appearance.

• Minimizes excess cuticle swelling to boost shine
• Softens and smooths strands for glossy, manageable hair
• Targets surface-level appearance while protecting underlying strength

How long does the protective effect last and when should I use it?

Protection against UV, pollution, and mechanical styling is reported for up to three days after application, helping maintain hair health between deeper repair sessions. Use it as part of your daily wash routine to fortify, detangle, and shield hair until your next K18 treatment mask.

• Provides up to 72 hours of protection in simulated tests
• Recommended for daily use after shampooing
• Ideal as maintenance between K18 treatment mask days

Who is this for: K18 Damage Shield Protective Conditioner suits anyone wanting lightweight, science-backed daily protection—people with color-treated, chemically processed, heat-styled, or pollution-exposed hair who prefer no-silicone conditioning. It’s especially useful for those who use K18’s repairing mask and need a non-build-up conditioner to maintain strength, shine, and manageability between intensive 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.