Joico K-PAK Reconstructor Deep-Penetrating Treatment 8.5 oz — 5-Min Repair with Keratin & Arginine

Joico K-PAK Reconstructor is a professional deep-penetrating 5-minute treatment that rebuilds and strengthens damaged hair using keratin, arginine, and targeted delivery technology.

This salon-favorite reconstructing treatment uses Joico’s smart keratin technology plus amino acids and nourishing oils to restore elasticity and reduce breakage. Formulated to repair visible damage from chemical services, heat styling, and environmental stressors, the formula sinks into stressed strands to fortify and improve manageability. Clinically minded ingredients are delivered over time via a liposome system to keep hair stronger between washes.

How quickly will I see improvement in damaged hair?

Most users notice smoother, stronger-looking hair after the first 5-minute application. The treatment works instantly on the surface and continues to rebuild protein content with repeated use, improving elasticity and reducing combing-related breakage.

• Visible smoothing and sheen after one use
• Designed as a 5-minute in-shower reconstructing masque
• Continuous repair from smart-release ingredients

What key ingredients are responsible for repair?

Keratin and arginine form the core rebuilding duo: keratin replaces lost structural protein while arginine supports cellular repair and elasticity. Complementary botanicals and oils provide antioxidant protection and essential fatty acids to nourish and seal the fiber.

• Keratin: targets and helps replace lost protein
• Arginine: supports strand elasticity and resilience
• Guava extract: antioxidant protection against environmental stress
• Evening primrose oil: supplies omega fatty acids for nourishment

How should I use K-PAK Reconstructor for best results?

Use as a weekly intensive or more often for highly compromised hair. Apply to clean, towel-dried hair, leave on for five minutes, then rinse thoroughly — follow stylist directions for deeper protocols or in-salon application.

• Apply to shampooed, towel-dried hair
• Leave in for approximately 5 minutes
• Rinse and style as usual; pair with Joico maintenance products

Will this product weigh my hair down or change color-treated tones?

The formula is optimized to rebuild without excessive buildup when used as directed; it won’t intentionally alter hair color. For color-treated hair, it helps fortify faded or fragile strands while preserving tone when rinsed thoroughly.

• Formulated for use on color-treated and chemically processed hair
• Rinse-out treatment avoids long-term residue with correct use
• Helps reduce breakage that can lead to uneven color loss

Who is this for: Joico K-PAK Reconstructor is suited for anyone with chemically processed, heat-damaged, or fragile hair seeking a concentrated salon-strength repair treatment. Ideal for people wanting a quick in-shower rebuild that strengthens strands, improves elasticity, and reduces breakage between salon visits.

Ingredients

WATER/AQUA/EAU, STEARAMIDOPROPYL DIMETHYLAMINE, MINERAL OIL/PARAFFINUM LIQUIDUM/HUILE MINERALE, GLYCOL STEARATE, PEG-8 DISTEARATE, SODIUM CHLORIDE, CETETH-2, HYDROLYZED HAIR KERATIN, LAURDIMONIUM HYDROXYPROPYL HYDROLYZED KERATIN, MYRISTYL MYRISTATE, CITRIC ACID, FRAGRANCE/PARFUM, SORBIC ACID, CETYL ALCOHOL, STEARYL ALCOHOL, CARTHAMUS TINCTORIUS (SAFFLOWER) SEED OIL, YEAST EXTRACT/FAEX/EXTRAIT DE LEVURE, ALOE BARBADENSIS LEAF JUICE, KERATIN AMINO ACIDS, METHYLPARABEN, PROPYLPARABEN.