
Simpler proof for skin after 40
Lorrie King and Celeste Lee on formulating for skin after 40, what peptides and hyaluronic acid can support, and where the data stop.
View the story →We work with skincare brands whose formulas can stand up to a close read: named concentrations, real studies and claims you are happy to see checked.
We read your study before your press release, check every concentration and give credit where the evidence is good.

Lorrie King and Celeste Lee on formulating for skin after 40, what peptides and hyaluronic acid can support, and where the data stop.
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We checked the concentrations, the testing method and the supporting ingredients behind Shani Darden's spare retinol routine.
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Desiree Verdejo on 15 percent vitamin C with kojic acid and botanical extracts for post-acne marks, what the formula can show, and what remains unproven.
View the story →Send the concentrations and the studies behind your claims. Write to Benjamin Marsh at benjamin@facevaluemag.com; we reply within two business days.
One skincare claim a week, checked against the study behind it: what was tested, on how many people, and what it actually proves.
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