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

How AirWashâ„¢ Supports Your Scalp

The reinvention of dry shampoo recognizes, traps, and eliminates odor while keeping your scalp (and hair) healthy. Read More
/ hair stories

How Motherhood Changed My Approach to Beauty

One of K18’s newest moms, Marian Kurz, shares her tips for getting the most out of her beauty routines in less time and steps. Read More
/ hair science

The Science of Scalp Health

Want strong, healthy hair? Start at the source. Read More
/ hair science

The Exciting Science Behind AirWashâ„¢

How genome mapping helped us reinvent dry shampoo that’s vegan, cruelty-free + environmentally friendly. Read More
/ hair stories

What I Love Most About Being a Stylist

K18 PRO, Alifia Young, shares her passion for educating clients and the curly-coily community about keeping their hair healthy. Read More
/ plastic bank

Let’s Clean The Planet, Together

How we’ve offset our plastic footprint in partnership with Plastic Bank. 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...