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

Charli xcx’s hairstylist gives good tour hair

Matt Benns’s hair story—how he got into the biz, how he met Charli, and how he keeps her hair looking brat. Read More

The best way to use hair oil

While there’s no exact “wrong” way, there is a better method. Read More

the give back gift guide

We love hair–and our community  Read More

How to keep hair strong all winter long

aka the truth about cold weather haircare Read More

The Top K18 Mask FAQs

answering your most-asked questions. Read More

taking peptide glamour shots with Tracy Debenport

meet the artist behind our limited-edition holiday packaging 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...