K18 at Moda
Shop K18 Haircare
Repair what happened. Protect what's next.
Biotech-powered professional haircare for hair compromised by colour, lightening, chemical services and heat — with a streamlined routine built around repair, protection and healthier-feeling hair.
Four minutes changes the routine.
Start with the damage
What are we trying to fix?
K18 is built around what happened to your hair — bleach, colour, chemistry, heat. Start there and the routine falls into place.
The product that started it
Meet the K18 Molecular Repair Mask. 4 minutes.
A leave-in molecular repair treatment powered by K18PEPTIDE™, for hair compromised by bleach, colour, chemical services and heat. The routine is different from a normal mask — and the four-minute wait is the whole point. Get those two things right and the rest is easy.
- Skip conditioner — apply to clean, towel-dried hair
- Wait 4 minutes before layering anything else
- Do not rinse — it's a leave-in
- Style as usual afterward
The routine that works
Five steps. Four minutes.
The K18 Mask replaces conditioner on treatment days — don't condition first, don't rinse it out, and give it its four minutes before anything else touches your hair.
Do it right and you only need to do it right.
Shop the K18 Mask- ShampooCleanse your hair.
- Skip conditionerDo not condition before the K18 Mask.
- Apply K18On clean, towel-dried hair. Use the right amount for your hair.
- Wait 4 minutesDo not rinse. Let the peptide work.
- StyleAdd your normal products and style as usual.
Less is more
Pick your size.
Three real sizes, one formula — all on the same product page.
50ml
Full size.
The one on our backbar. The right size once K18 is part of the routine.
View the 50ml →The K18 system
Repair. Maintain. Protect.
K18 is a focused system, not a shelf of options — six steps that explain almost the entire brand.
The system itself is the story.
Shop all K18- ResetPEPTIDE PREP Detox Shampoo — a deeper cleanse before treatment when buildup is present.
- RepairMolecular Repair Hair Mask — the four-minute repair step.
- MaintainDamage Shield shampoo + conditioner — everyday wash care between treatment days.
- Heat styleHeatBounce — conditioning heat protection before hot tools.
- FinishMolecular Repair Hair Oil — frizz control, shine and repair support.
- RefreshAirWash Dry Shampoo — between wash days.
The rest of the routine
The K18 line-up.
Between repair days
Damage Shield.
Protective shampoo + conditioner for stronger-feeling hair every day.
- pH Protective Shampoo
- Protective Conditioner
Pro size
The products you keep using.
Salon sizes for the wash care you rely on — exact sizes, no rounding.
- Damage Shield Shampoo 930ml
- Damage Shield Conditioner 938ml
Before the heat
Meet HeatBounce.
A conditioning heat protectant for smoother styling and less damage from hot tools.
The day between wash days
AirWash.
A dry shampoo that refreshes hair + scalp without white cast.
For lightened hair
TripleBright.
Purple shampoo to tone unwanted warmth in blonde and lightened hair.
The finishing step
Molecular Repair Oil.
Lightweight oil for shine, frizz control and heat styling support.
All K18
Shop all K18.
Before you buy
Dry or damaged?
They're not the same thing — and they don't need the same products. Dry hair usually wants moisture. Damaged hair has been structurally stressed. Not sure which is you? Ask us — that's what having a salon behind the store is for.
Dry
Feels thirsty.
- Feels rough or dull
- Improves with conditioner
- Needs moisture + softness
- Feels better after hydrating masks
Damaged
Structurally stressed.
- Breakage + loss of elasticity
- Repeated bleach or chemical services
- Accumulated heat stress
- Still feels compromised after conditioning
Why K18
Repair, not camouflage.
Biotech-powered
A technology-led approach to compromised hair, built on the patented K18PEPTIDE™.
4-minute hero treatment
The Mask is built around one simple four-minute waiting period.
Built for real damage
Especially relevant to bleach, colour, chemical and heat-compromised hair.
Fewer steps
A streamlined system rather than a complicated routine.
Why we choose it
Because damaged hair needs a different conversation.
Not every head of hair that feels dry needs K18 — sometimes the hair simply needs moisture. K18 makes more sense when the hair has actually been structurally compromised: repeated lightening, chemical services, breakage or accumulated heat stress. That's where having a salon behind the store matters. We can help tell the difference.
- Real damage — use repair when repair is actually needed.
- Simple routine — no twelve-step system required.
- Professional roots — made for chemically and mechanically stressed hair.
- We can help you choose — dry and damaged are not interchangeable.
Dry isn't always damaged.
K18 questions?
Common questions.
K18 works differently — these are the ones that matter.
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How do I use the K18 Mask?
Shampoo, skip conditioner, apply the mask to clean towel-dried hair, wait four minutes without rinsing, then style as usual. That's the whole routine.
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Do I use conditioner before K18?
No — on treatment days the K18 Mask replaces conditioner. Apply it to clean, towel-dried hair with nothing else on it.
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Do I rinse the K18 Mask out?
No. It's a leave-in treatment — apply, wait four minutes, and carry on.
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Why do I have to wait four minutes?
The waiting period gives the K18PEPTIDE™ time to work in the hair before other products are layered on top. Skipping it is the most common way people undersell the product.
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How much K18 should I use?
It depends on hair length and density — start small and follow the guidance on the product page. More isn't better; even coverage is.
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What's the difference between the Mask and the Hair Oil?
The Mask is the primary repair treatment. The Oil is the finishing step — shine, frizz control and heat styling support with repair technology built in.
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What's the difference between PEPTIDE PREP and Damage Shield?
PEPTIDE PREP Detox is a deeper clarifying cleanse for buildup and reset days. Damage Shield is the everyday protective shampoo and conditioner between repair treatments.
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What does HeatBounce do?
It's a conditioning heat protectant — applied before blowdrying or hot tools to protect the hair while keeping it soft and manageable.
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Is K18 for dry hair or damaged hair?
K18 is built for damaged, structurally compromised hair — bleach, colour, chemical services, heat. If dryness is your main problem, hydration may make more sense. Not sure? Ask us.
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Which K18 product is for blonde hair?
TripleBright Purple Shampoo tones unwanted warmth in blonde and lightened hair — pair it with the Molecular Repair Mask, since lightened hair is usually compromised hair.
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Does Moda sell K18 pro sizes?
Yes — salon sizes of the Damage Shield wash care, with the exact sizes (930ml shampoo, 938ml conditioner) listed on each product.
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Can Moda help me decide if I need K18?
That's exactly what we're for. Tell us what's been done to your hair and how it feels now, and we'll tell you honestly whether K18 — or something completely different — makes more sense.
Still deciding? Ask Moda
K18 at Moda
Repair what happened. Protect what's next.
Moda Salon carries K18 professional haircare in Canada — the Leave-In Molecular Repair Hair Mask in 5ml, 15ml and 50ml sizes, PEPTIDE PREP Detox Shampoo, Damage Shield pH Protective Shampoo and Conditioner (including 930ml and 938ml pro sizes), HeatBounce heat protectant, AirWash Dry Shampoo, TripleBright Purple Shampoo for blonde hair, AstroLift volume spray and the Molecular Repair Hair Oil.
K18 is a focused, biotech-led system for hair compromised by bleach, colour, chemical services and heat — and because there's a salon behind this store, we can help you figure out whether your hair actually needs repair or just moisture. We ship K18 across Canada and the USA, duties paid.
Need help choosing?
Tell us what your hair is doing.
Dry? Breaking? Lightened? Heat-styled? Somewhere in between? Tell us what's been done to your hair and how it feels now — we'll help figure out whether K18, or something completely different, makes more sense.