Professional Journal

Sep 30, 2025 /featured, people

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Why You Should be Trimming Your Hair Every Full Moon How this Santa Fe native found power in her curls + cultural heritage.

Jul 24, 2023 / products

Can protective styles damage hair?

Our guide to preventing damage from protective styles with PRO expert, Alifia

Jul 21, 2023 / products

How to prevent summer hair damage

Get the breakdown on different types of summer hair damage, and the best ways to tackle them.

Jul 07, 2023 / hair science

Science Class 18: The science behind UV damage

You know how chemical services like bleaching, coloring, or heat styling can damage hair? Exposure to the environment can hurt hair the exact same ...

Jul 07, 2023 / products

FUNdamentals 38: Wait, what shampoo should I use?

Your guide to the perfect cleanse at the shampoo bowl, and in your client’s at-home routine.

Jun 26, 2023 / people

Molecular Moments 02: Lane Abraham Cook

Healthy hair is born at the hands of the PROs, so we’re tapping stylists across the globe to see how K18 molecular repair powers their creativity, ...