Journal

Notes on skin, formulation and ritual.

Slow reading on the science, the texture, and the small daily acts that compound into quiet radiance.

September 19, 2026 · 3 min read

AHA and BHA: which acid does what

The difference comes down to one property: whether the acid dissolves in water or in oil. That single...

Letters from Cham

Receive our notes on skin, formulation and the slow pursuit of a quiet glow.