Somewhere between the highlights, the straightener and one very hot summer, hair stops stretching and starts snapping. This is the litre that steps in before the scissors have to.
TL;DR: The protein-rich, bond-building conditioner from the NAK Signature range, in salon-sized litre form. Built to rescue and repair fragile, chemically treated, dry or damaged hair, with Signature Peptides and the Ectoin Barrier Booster to help condition and strengthen. Named Best in Care at the 2025 ANZ Hair Industry Awards alongside its matching shampoo. Sweet grape scent.
Product Details and Benefits
- Bond-building care. Works on the internal structure for visibly stronger hair, rather than simply coating the outside and hoping for the best.
- Protein-rich formula. Helps improve the look and feel of vulnerable strands, which is exactly what compromised hair needs after a lightening service or a long run of heat styling.
- A noticeably silkier finish. Delivers a dramatic transformation to softer hair that feels as good as it looks, so strength doesn't come with that stiff, straw-like protein texture.
- Signature Peptides. Work to restore scalp health and reduce damage to the hair fibre.
- Ectoin Barrier Booster. Protects hair by fortifying and hydrating the strand, keeping the repair work from being undone by the next wash.
- Natural Vegan Complex. Coconut Oil for softness and suppleness, Aloe Vera for hydration memory, Hydrolysed Rice Protein for strength and balance, and Pear Extract to replenish and condition dry or damaged lengths.
- Recommended for fragile, chemically treated, dry or damaged hair. Bleached blondes, frequent colourers and daily heat users are the core audience here.
- Sweet grape fragrance. Stylists consistently single this one out, and not just for the results.
- Award-winning pairing. The Structure Complex Protein Shampoo and Conditioner were named Best in Care at the 2025 ANZ Hair Industry Awards.
- Australian made and owned. NAK has been salon-trusted since 2003, with formulas that are 100% vegan and cruelty free, and free from sulphates, parabens and gluten.
- A full litre. Back-bar sized for salon basins, long hair, and anyone whose repair routine is a permanent fixture rather than a phase.
How to Use
- Shampoo first, ideally with the matching Structure Complex Protein Shampoo.
- Apply to clean, wet hair and massage through from roots to ends.
- Leave in for 1 to 5 minutes.
- Rinse thoroughly.
Pro tip: Protein works best with a moisture partner. If you are using this at every wash on very dry or highly lightened hair, alternate it with a hydration-focused conditioner such as NAK Signature Hydrate Condition or Nourish Condition. Strength and moisture are two different jobs, and hair that gets only one starts to feel brittle rather than repaired.
Why You'll Love It
Damaged hair does not need a miracle, it needs consistency. This is the litre that makes consistency easy, one wash at a time. Add it to your cart and give your strands their structure back.
