How much leave-in mask should you use?
A handy dosage guide for every hair type, density, and length. Read More
/ video

The Science Behind K18REPAIRâ„¢

How our patented K18PEPTIDEâ„¢ reverses hair damage from the inside out. Read More
/ education

K18 Color Trip National Education Tour

Discover how top PRO stylists like Jack Martin, Alfredo Lewis + Eric Vaughn make hair magic happen—live. Read More
/ hair stories

How Embracing My Natural Hair Texture Transformed My Life

PRO Stylist Latoya Moore shares her hair story and mission to help clients love their hair. Read More
/ video

How Nature Inspires K18 Innovation

See what’s possible with our biology-first approach. Read More
/ products + routines

How DAMAGE SHIELD Protects Hair with Biomimetics

Damage happens daily, but with biotechnology, you can stop it before it starts. Read More
contributors
Biochemist
Karl Schmieder

Karl is a biochemist + the CEO of MessagingLab, a company that works with other Scientists to help them tell their...

Scientist
Heleen Kibbelaar

Heleen holds a bachelor's and master's degree in (physical) chemistry from the University of Amsterdam and Utrecht University in the Netherlands....

Colorist
Aura Friedman

You name ‘em, Aura has colored their hair. From celebrities like Lady Gaga, magazines like Teen Vogue, and the...

Salon Owner
Christine Thompson

As a professional colorist at Spoke & Weal in Los Angeles, Christine specializes in corrective color, color change, and working...

Colorist
Linh Phan

Linh Phan, or as his loyal following calls him, BESCENE is an international educator, salon owner + CEO. Sharing his trend-spotting...

Scientist
Esther Olu

Esther Olu is an R&D formulation scientist, esthetician, educator, science communicator who is a passionate advocate for dispelling misinformation within the...