Featured study
Tools & Testing · No. 01
Assessing the Impact of Jade Rollers on Skin Hydration
Jade rollers have gained popularity as a beauty tool purported to enhance skin hydration, improve circulation, and promote lymphatic drainage. While these claims are appealing, I a
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From the editor
Why this reads like a lab notebook, not a haul.
I am not here to sell you the twelve-step routine. I read the ingredient studies so you do not have to, I test one variable at a time, and I write down what changed and what did not. Skin past thirty rewards patience and a short list far more than novelty.
Every claim on this site links to a source, every product note tells you the concentration, and nothing gets a rave until I have lived with it for a month.
Joshua Franz, editor
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Marginalia
Annotated this week
The concept of pH is frequently discussed in the skincare community, yet it remains poorly understood by many consumers.
From Understanding the Role of pH in Your Skincare Routine, with the study cited in full.