K18 hair products for damaged hair

If your hair is feeling damaged, you’ve probably used products that only make it feel softer on the surface. K18 is a haircare brand that takes a different approach. Backed by biotech, their haircare products work deeper to support long-term repair where the damage begins.

The K18 Leave-In Molecular Repair Hair Mask does more than just make your hair feel good for the day. It starts working in minutes to help repair damage from the inside and keeps improving how your strands feel over time. With every use, you’ll notice more strength, softness and bounce.

For best results, try the K18 Peptide Prep Detox Shampoo. It clears away product build-up and oil, creating a clean base so the treatment can get where it needs to go.

Follow with the mask to clean, towel-dried hair, wait four minutes, then style as usual. No rinsing. No hair conditioner. It’s a simple two-step routine we love for anyone dealing with breakage, dryness or over-processed hair.

How K18 haircare works to repair hair

K18 repairs hair by working inside the cortex, where real damage happens. The patented K18Peptide penetrates the inner layers of the hair and reconnects broken keratin chains that can be damaged by bleach, hair colour, heat styling and chemical services.

Instead of just coating the hair, K18 works inside the hair fibre to help rebuild its internal structure. It helps maintain long-term hair health by restoring strength and improving elasticity, so your hair feels stronger and more flexible. With continued use, you’ll notice softer texture, more bounce and less breakage, especially if your hair’s been damaged by colour or heat.

Are peptides good for your hair?

Absolutely, peptides are a great ingredient to look for if you're trying to revive damaged strands. These small chains of amino acids help rebuild the protein structure, improving strength, bounce and overall hair health. You’ll often see them used in a hair treatment made to work beyond the surface and support repair from within.

Is K18 good for all hair types?

Yes, K18 products are made for every hair type, whether you have fine, curly, straight, thick or damaged hair. The formula adapts easily to different textures, so you only need to adjust how much you use. Start with a small amount for finer strands, and build up for thicker or coarser hair to get an even, consistent result.

How to use K18 Leave-In Molecular Repair Hair Mask

If your hair has been coloured, bleached or heat styled, the K18 Leave-In Molecular Repair Hair Mask can help repair damage and improve how your hair feels with every use. It’s quick to apply and fits easily into your wash-day routine.

To get the most out of it, make sure to start with clean, product-free hair. Follow the steps below to get the best results from your hair treatment:

1. Wash first with K18 Peptide Prep Detox Shampoo: This removes build-up and preps the hair for better product absorption.
2. Do not apply conditioner before the mask: Skipping conditioner allows the treatment to absorb more effectively.
3. Apply the mask to clean, towel-dried hair: Use one pump at a time and apply evenly through the mids and ends.
4. Wait four minutes before touching or styling: This gives the peptide time to activate and rebuild from the inside.
5. Repeat every 4 to 6 shampoos: Regular use helps support stronger, softer and healthier hair over time.

Stylist tips for choosing the right K18 hair products

At Hairhouse, our stylists always start with what your hair is telling us. If it feels dry, rough, frizzy or damaged from colour or heat, the right K18 products can help bring it back to life. It’s all about knowing what your hair needs and matching it with the right formula.

To help you choose, here are a few simple tips our stylists often share in the salon:

• Start with how often you wash: If you wash frequently, go for the Damage Shield pH Protective Shampoo to protect your scalp and support daily care.
• Check your ends: Dry or brittle ends can benefit from a light serum or hair oil to add moisture and smoothness.
• Think about damage levels: If your hair feels over-processed, reach for the K18 Leave-In Molecular Repair Hair Mask to help rebuild from within.
• Tackle frizz and boost shine: Use the K18 Molecular Repair Hair Oil to smooth flyaways and support strength without heaviness.
• Pick what keeps your hair feeling soft: For coloured or dry hair, look for nourishing formulas that hydrate and keep your strands feeling strong and healthy.

Why we love K18 AirWash Dry Shampoo

Need to freshen up between wash days? K18 AirWash Dry Shampoo gives you clean-feeling hair in seconds. This non-aerosol mist absorbs excess oil and removes odour without leaving a white cast or gritty texture. Just soft, fresh hair that feels like it’s been washed.

It’s no surprise this haircare essential has been a top-five best seller at Hairhouse since launch. The formula uses patented biotech to tackle sweat and oil that cause odour, then leaves behind a soft, clean scent that lasts. Translucent microbeads absorb oil at the root without weighing your hair down or building up on the scalp.

With regular use, this dry shampoo helps balance scalp oils, so you can go longer between washes without feeling oily or flat. One spray per section is enough. Massage in, brush through and style as usual.

Where to buy K18 hair products in Australia

You’ll find a wide range of K18 hair products at Hairhouse, both online and in-store Australia-wide. From treatments that help reverse hair damage and restore strength and elasticity, to hairstyling essentials like AirWash Dry Shampoo and AstroLift Volume Spray, we’ve got everything in one place.

Whether you’re shopping at regular price or keeping an eye out for a sale price, it’s easy to start with a first order or stock up on best-sellers you already love. Shop online or visit us in-store and chat with our team to find out what works best for your hair!