Shop K18 Hair Products Australia

K18 works at a deeper level to help reverse damage caused by bleach, colour, heat, and chemical services. Powered by the patented K18, this K18 hair treatment range is designed to repair hair from the inside out rather than simply coating the strand. At SSS Hair, shop the full range of K18 products online in Australia, including the K18 Leave-In Molecular Repair Mask, K18 AirWash Dry Shampoo, and K18 Peptide Prep Detox Shampoo, with fast shipping Australia-wide.

Whether you need a K18 hair mask for weekly repair, a K18 dry shampoo for second-day hair, or a lightweight K18 hair oil to finish your style, the full K18 hair range is here in one place.

How Does K18 Work?

K18 is a biomimetic peptide that mimics hair's natural structure, reconnecting the broken keratin chains and disulfide bonds left behind by bleaching, colouring, heat styling, and chemical services. Unlike a traditional hair mask that sits on the surface, the K18 leave-in molecular repair hair mask works inside the hair's cortex, which is why most of the range doesn't need to be rinsed out. As a K18 repair mask, it's become one of the most searched-for K18 treatment options for anyone dealing with over-processed or heat-damaged hair.

Reverses damage at the molecular level rather than masking it with a temporary coating
Delivers results in just 4 minutes, with no rinsing required for the flagship leave-in mask
Clinically proven to restore strength, softness, smoothness, and bounce from the first use
Suitable for all hair types, including fine, curly, colour-treated, and chemically processed hair
Vegan, colour-safe, and cruelty-free, formulated without sulphates, parabens, or silicones

Shop K18 by Product Type

K18 Leave-In Molecular Repair Mask The core of the range, and the most searched K18 mask in Australia. Also known as the K18 leave in mask or K18 molecular repair hair mask, it's applied to clean, towel-dried hair and left for 4 minutes before styling, without rinsing. Best used every wash for the first 4-6 washes after a salon service, then weekly.

K18 Peptide Prep Detox Shampoo A K18 detox shampoo and K18 clarifying shampoo in one, this K18 peptide prep shampoo removes product build-up, oil, and mineral deposits before applying the mask, so the peptide can penetrate the hair without interference.

K18 AirWash Dry Shampoo A non-aerosol K18 dry shampoo that absorbs oil and odour for up to three days while still delivering K18, so second-day hair gets refreshed without added damage.

K18 HeatBounce Heat Protectant A lightweight K18 heat protectant that shields hair up to 232°C, making it an essential step before straightening, curling, or blow-drying.

K18 AstroLift Volume Spray A reparative K18 spray for fine or flat hair, adding root lift and body while still delivering repair benefits.

K18 Molecular Repair Hair Oil A finishing K18 oil that smooths flyaways and adds shine without weighing hair down.

K18 Damage Shield Shampoo and Conditioner A daily, pH-optimised K18 shampoo and conditioner duo, including a standalone K18 conditioner, that helps maintain colour and reduce protein loss between treatments.

How to Use K18

• Shampoo, don't condition. Use the K18 Peptide Prep Detox Shampoo if hair has product build-up.
  
• Apply the leave-in mask. Work through towel-dried hair from ends to roots and leave for 4 minutes.
  
• Don't rinse. Comb through, add styling product, and style as usual.
  
• Protect before heat. Follow with K18 HeatBounce if you're using hot tools.
  
• Repeat regularly. Use for the first 4-6 washes post-salon service, then weekly to maintain results.

Explore More at SSS Hair

If you're comparing bond-repair technologies or building out your routine, these categories pair naturally with K18:

• Hair Treatment - the wider repair and treatment category K18 sits within
  
• Olaplex - another leading bond-repair brand, popular for comparing or alternating with K18
  
• Plex and Bond Building Systems - see how K18's peptide technology compares to other bond-building treatments
  
• Heat Protectant Sprays - pair with K18 HeatBounce before any hot tool styling
  
• Dry Shampoo - compare K18 AirWash with other second-day refreshers

Shop the full K18 Australia range at SSS Hair, including travel-size K18 50ml and full-size K18 150ml options, all with fast delivery across Australia.