your client's healthiest hair

the first biotech breakthrough to reverse hair damage in 4 minutes

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pro-exclusive education

Exclusive resources to master the knowledge needed to create without boundaries.

GET K18 CERTIFIED OPEN SERVICE GUIDE

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K18PEPTIDE™ Molecular Repair Service

Rated 4.8 out of 5

Based on 14 reviews

PRO mist + mask to reverse hair damage

PEPTIDE PREP™ detox shampoo

Rated 5.0 out of 5

Based on 2 reviews

Back bar size of our color-safe clarifying shampoo formulated with K18PEPTIDE™

Please select a size

back bar size - $72.00 32oz retail size - $19.00 8.5oz in-salon set - $114.00 6pc POP

PEPTIDE PREP™ pH maintenance shampoo

Rated 4.7 out of 5

Based on 3 reviews

Back bar size of our pH-optimized cleansing shampoo formulated with K18PEPTIDE™

Please select a size

back bar size - $68.00 32oz retail size - $18.00 8.5oz in-salon set - $108.00 6pc POP

pro peptide starter kit

Rated 5.0 out of 5

Based on 15 reviews

limited-edition set to reverse hair damage + FREE stylist swag

build your business with biotech

See how PRO Stylist Linh Phan sets his salon + clients up for success with K18.

get certified

Get a K18 crash course in 30 minutes or less and get added to our Global Salon + Stylist Locator.

go pro

how-to videos

Learn how to master K18 in the salon, straight from the PROs.

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FAQs

Got questions? Get started here.

OPEN FAQS

hair freedom for all fund

We made a scholarship to fund BIPOC stylists’ education.

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*Results observed in a clinical study while using mist and mask as part of a bleaching treatment. Results may vary depending on hair type, quality, and history.

see it in action

The more damaged the hair, the more dramatic the results. The PRO Service restores hair up to 91% original strength + 94% original elasticity*

*Results observed in a clinical study while using mist and mask as part of a bleaching treatment. Results may vary depending on hair type, quality, and history.

science class is in session

SCIENCE CLASS 01: where does hair strength come from?

Let’s have a conversation about strength. Not the muscle kind. We want to set the record straight on what’s responsible for hair strength and elast... Learn More

science class 09: the clean hair convo

We talk a lot about hair health. Like, a lot. And since science (another thing we’re big fans of) isn’t accurate without the full picture, we want ... Learn More

Buzzword Breakdown 01: Microbiome

You know how we roll, we like to challenge, myth bust, and break down every type of buzzword in the hair world—because we found through our researc... Learn More

HAIR MYTH BUSTING 01: more product does not equal better hair

Trying tons of products to fix your damaged hair? Adding more and more products to your routine hoping to return hair to some sort of healthy state... Learn More

SCIENCE CLASS 02: the dynamic world of hair

We’ll open this class with a question. What do you really know about hair? Did you know it’s not a static, physical thing? It’s a dynamic, constan... Learn More

MYTH BUSTING 03: the TRUTH behind hair damage

The D word. That damn damage! It’s the worst. We know, we built a whole company around renewing hair that’s been destroyed by it. It’s not exactly ... Learn More

our pro philosophy

more
product
≠
healthier
hair

Traditional conditioners are less of a hydration boost, more of a temporary coating to cover up signs of unhealthy hair.
Bond builders temporarily patch damage like hard glue. Both wash away with water, leaving damage + buildup behind. We believe less is more.

hair was
not made
for product

Most products aren’t optimized for hair. Disrupting hair + scalp’s natural balance stresses strands, making hair needier for more product, energy, and time spent taming it…it’s a vicious cycle. Healthy hair needs less.

damage
does not
have to be
permanent

Reverse years of damage in 4 minutes with peptide-powered renewal. K18 restores hair’s core strength + elasticity for lasting strength, softness, smoothness, and bounce that only gets better with continued use.

resources for you

Get a K18 crash course in 15 minutes or less. You’ll get added to our Global Salon + Stylist Locator.

Get alll the info you need to price + optimize K18 with every salon service.

Learn, inspire + connect with our PRO community on Facebook. Spanish-speaking PROs—we got you too.

Let's Go

shop the breakthroughs

build your business with biotech

science class is in session

SCIENCE CLASS 01: where does hair strength come from?

science class 09: the clean hair convo

Buzzword Breakdown 01: Microbiome

HAIR MYTH BUSTING 01: more product does not equal better hair

SCIENCE CLASS 02: the dynamic world of hair

MYTH BUSTING 03: the TRUTH behind hair damage

our pro philosophy

resources for you

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