Joico K-PAK Color Therapy Luster Lock Leave-In Treatment 5.1 oz — Keratin & Argan Oil for Color-Treated Hair, Instant Shine & Repa

This lightweight leave-in treatment combines keratin, argan oil, and African manketti oil with Joico's Smart Release Technology to repair breakage, lock in radiance, and help color look fresher between salon visits. Designed specifically for color-treated hair, the formula targets weakened, dull-looking strands and works from the inside out to improve combing strength and surface luster after just one application.

How does this product improve hair strength and reduce breakage?

The formula supplies keratin protein to areas of damage, helping replace what the hair has lost through chemical services and styling. In lab and salon testing, the treatment markedly increased combing strength and reduced incidents of breakage when used as directed.

• Keratin rebuilds and reinforces weakened hair fibers.
• Smart Release Technology delivers repair actives over time.
• Targets breakage from brushing, heat, and color processing.

Will it help color-treated hair keep its vibrancy and shine?

Yes — ingredients like African manketti oil and argan oil protect and enrich the hair surface so color looks brighter and reflects more light. The treatment seals and smooths cuticles to enhance gloss and maintain hue intensity between color appointments.

• African manketti oil provides antioxidant protection to help guard color from environmental stressors.
• Argan oil deeply nourishes for enhanced shine.
• Surface-smoothing action improves color reflection and perceived vibrancy.

How do I use Luster Lock in my routine?

Apply a small amount to towel-dried hair, concentrating on mid-lengths and ends, then style as usual; no rinse required. It can be used before blow-drying or as a finishing touch on dry hair to boost shine and tame flyaways.

• Use after shampoo and conditioner on damp hair for best results.
• Start with a pea-to-quarter-size amount depending on hair length and thickness.
• Reapply sparingly to dry hair for targeted shine and frizz control.

What technology and active ingredients make this different?

Joico's Smart Release Technology encapsulates nourishing oils and proteins inside liposomes so key actives are released continuously after application. That, combined with keratin and antioxidant-rich oils, helps sustain repair and protection throughout daily styling cycles.

• Liposome delivery releases Rosehip Oil, Arginine, and Keratin over time.
• Keratin reinforces structural integrity of hair strands.
• Argan and manketti oils supply vitamins and antioxidants for surface health.

Who is this for: Joico K-PAK Color Therapy Luster Lock is made for people with color-treated or chemically processed hair who want immediate shine, reduced breakage, and longer-lasting color between salon visits. It suits fine to medium hair when used sparingly and benefits textured or damaged hair types seeking protein-rich repair with nourishing oils.

Ingredients

Water/Aqua/Eau, Butylene Glycol, Dimethicone, Sorbitol, Behenyl Alcohol, Behentrimonium Chloride, Stearyl Alcohol, Cetyl Alcohol, Glyceryl Oleate, Schinziophyton Rautanenii Kernel Oil, Pentapeptide-30 Cysteinamide, Pentapeptide-29 Cysteinamide, Tetrapeptide-29 Argininamide, Tetrapeptide-28 Argininamide, Keratin, Hydrolyzed Keratin, Cocodimonium Hydroxypropyl Hydrolyzed Keratin, Aleurites Moluccana Seed Oil, Arginine HCl, Hydrogenated Castor Oil/Sebacic Acid Copolymer, Argania Spinosa Kernel Oil, Psidium Guajava Fruit Extract, Thioctic Acid, Oenothera Biennis (Evening Primrose) Oil, Tocopheryl Acetate, Aloe Barbadensis Leaf Juice, Aminopropyl Dimethicone, Hydrolyzed Keratin PG-Propyl Methylsilanediol, Allantoin, Glycolipids, Phenoxyethanol, Stearyl Dihydroxypropyldimonium Oligosaccharides, Steartrimonium Chloride, Octyldodecanol, Propylene Glycol, PEG-6 Methyl Ether Dimethicone, PEG-90M, Citric Acid, Glycerin, Hyaluronic Acid, Polyquaternium-55, Polysilicone-19, Dipropylene Glycol, Butyl Methoxydibenzoylmethane, Isopropyl Alcohol, Sodium Ascorbyl Phosphate, Sodium Hydroxide, Alpha-Isomethyl Ionone, Butylphenyl Methylpropional, Fragrance/Parfum.