Glass Skin Diary
Founder & editor
Elodie Marsh
Elodie started Glass Skin Diary as a personal spreadsheet for tracking which products actually worked, after one too many half-used serums piled up in her bathroom cabinet. She buys and tests nearly everything she reviews with her own money, often for months before writing about it, and says so when she hasn't. She still keeps that original spreadsheet, now several tabs deep, as the backbone of the site.
Latest from Elodie
A Retinol Routine for Beginners, With the Three Products I'd Start WithThe slow, unglamorous ramp-up that actually gets people past the flaking stage, built around one cleanser, one retinol, and one recovery cream.
A Short History of Cold CreamFrom a Roman physician's beeswax emulsion to the cleansing balm on your shelf today: the formula that barely changed for 1,800 years.
How to Layer Actives Without Wrecking Your BarrierA practical order of operations for retinoids, acids, vitamin C, and niacinamide, plus the combinations that cause the most trouble.
My 20-Minute MorningAn essay about the twenty minutes at the bathroom sink that turned out to be the quietest part of my day.