K18
K18
Shop K18 haircare in NZ – advanced biotech formulas that repair damage at a molecular level. Start with the cult-favourite K18 Leave-In Molecular Repair Mask, then explore the growing range of styling innovations including the Peptide Prep Shampoo, Molecular Repair Hair Oil, Astrolift Volume Spray, and AirWash Dry Shampoo. Restore strength, softness, and shine in just 4 minutes.
Showing all 19 resultsSorted by popularity
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K18 Leave-In Molecular Repair Mask 50ml
$149.00 -
K18 Leave-In Molecular Repair Mask 15ml
$60.00 -
K18 AirWash Dry Shampoo 118ml
$115.00 -
K18 Peptide Prep Detox Shampoo 250ml
$79.00 -
K18 Damage Shield pH Protective Shampoo 250ml
$79.00 -
K18 Leave-In Molecular Repair Mask Dose 5ml
$28.00 -
K18 Molecular Repair Oil 30ml
$125.00 -
K18 Damage Shield Protective Conditioner 250ml
$79.00 -
K18 Shield & Repair Bundle (Damage Shampoo, Conditioner, Mask)
Original price was: $307.00.$260.95Current price is: $260.95.Save 15% -
K18 Heatbounce Conditioning Heat Protectant 118ml
$115.00 -
K18 AstroLift Reparative Volume Spray 118ml
$115.00 -
K18 Shield, Repair & Shine Bundle (Damage Shampoo, Mask, Oil)
Original price was: $353.00.$300.05Current price is: $300.05.Save 15% -
New!
K18 TripleBright Oxidation Defense Purple Shampoo 125ml
$79.00 -
K18 Detox & Repair Bundle (Detox, Mask, Oil)
Original price was: $353.00.$300.05Current price is: $300.05.Save 15% -
K18 Shield & Shine Bundle (Damage Shampoo, Conditioner, Oil)
Original price was: $283.00.$240.55Current price is: $240.55.Save 15% -
K18 Bestsellers Bundle (Detox, Mask, Dry Shampoo)
Original price was: $343.00.$291.55Current price is: $291.55.Save 15% -
K18 Shield & Refresh Bundle (Damage Shampoo, Conditioner, Dry Shampoo)
Original price was: $273.00.$232.05Current price is: $232.05.Save 15% -
K18 Repair & Style Bundle (Mask, Dry Shampoo, Volume Spray)
Original price was: $379.00.$322.15Current price is: $322.15.Save 15% -
K18 Repair, Refresh & Shine Bundle (Mask, Oil, Dry Shampoo)
Original price was: $389.00.$330.65Current price is: $330.65.Save 15%
Frequently Asked Questions
Q. How does K18 work?
K18 works with a patented K18Peptide, a breakthrough oligopeptide that carries essential amino acids (the building blocks of hair) deep into the hair cortex. Once inside, it targets broken disulfide bonds and replenishes lost amino acids. This process reconnects the hair’s inner structure – restoring strength, elasticity, softness, and resilience from the inside out.
Q. Is there any point in me using K18 if I don’t bleach or colour my hair?
Yes, of course! While K18 is famous for reversing bleach and colour damage, it also repairs everyday stress from heat styling, UV rays, and environmental factors. Even if you don’t chemically treat your hair, K18 can help keep it healthier, shinier, and less prone to breakage.
Q. Is K18 a protein treatment?
K18 is not a traditional protein treatment. Instead of coating hair with protein, the K18Peptide actually repairs broken keratin chains inside the hair. That means stronger, longer-lasting results without the risk of making hair stiff or brittle, which can happen with over-using protein treatments.
Q. Will the K18 mask weigh my hair down?
No, the K18 Leave-In Molecular Repair Mask is super lightweight and designed to absorb quickly. It works from the inside out, so your hair feels soft and bouncy instead of coated or heavy.
Q. Why are you not supposed to use conditioner with the K18 mask?
Conditioner can create a barrier that prevents the K18Peptide from penetrating deeply into the hair. The K18 Mask is designed to be applied to freshly shampooed hair. If you require extra moisture, you can apply conditioner after you have waited 4 minutes for the mask to work.
A. Is the K18Peptide in every product?
Yes, the K18Peptide™ is included across the K18 haircare range, from the mask to the shampoos, conditioner, oil, and AirWash. This ensures you get molecular repair and protection in every step of your routine.
A. Is it better to use the full K18 routine?
Each product is powerful on its own, but the full K18 system gives complete repair and protection:
- When you need to repair damage: use the K18 Detox Shampoo + K18 Mask.
- When you need to protect against daily damage: use the Damage Shield Shampoo + Conditioner.
- Every day: apply the Molecular Repair Hair Oil.
- Between wash days: refresh with the AirWash Dry Shampoo.
- During styling: use the HeatBounce Conditioning Heat Protectant + Astrolift Reparative Volume Spray.
K18 and Olaplex both target damaged hair but work differently. Olaplex focuses on repairing disulfide bonds, while K18 goes deeper to reconnect keratin chains with its patented peptide technology. Many stylists and users find K18 works faster, with visible results after just one use, while Olaplex may require repeated treatments. The best choice depends on your hair type, level of damage, and personal preference.
