The anatomy of a healthy scalp
Follicle, sebum, microbiome. What each one does, and the three signs your scalp is asking for help.
Read more →Notes from the lab
The Journal
Written by our trichologist and formulators. No trend pieces, no affiliate lists.
Sulfate-free, explained
What sulfates actually do, who genuinely needs to avoid them, and why "sulfate-free" alone tells you very little.
Read more →How often should you wash?
The answer depends on four variables, none of which is your hair type. A simple decision tree.
Read more →Heat styling without damage
The temperature threshold where keratin denatures, and how to stay under it while still getting a blowout.
Read more →Our ingredient glossary
Every active we use, what the research says, and the percentage we dose it at. Updated quarterly.
Read more →The ritual: 10-minute mask Monday
Why a weekly deep treatment outperforms daily "repair" products, and how to make the ten minutes pleasant.
Read more →