Science-first skincare
Science-first reviews of luxury skincare, peptide serums, and high-performance beauty products on Amazon.
Featured
LED therapy is a legitimate skincare tool when the device delivers enough light at the right wavelengths. Most masks on the market don't publish the number that tells you whether they do. Here's how to read the specs — and which masks pass.
Read →
Cotton pillowcases create mechanical stress on skin overnight that works against the actives you apply before bed. Here's what the research says about silk, and which pillowcase is worth the investment.
Read →
Most peptide serums contain concentrations too low to do anything. We ranked the top options on Amazon by actual active ingredient evidence, not marketing.
Read →Latest reviews
Vitamin C is the most evidence-backed topical antioxidant in skincare. It is also the most frequently formulated incorrectly. This review ranks the top options on Amazon by the chemistry that determines whether a product actually works.
Read →LED therapy is a legitimate skincare tool when the device delivers enough light at the right wavelengths. Most masks on the market don't publish the number that tells you whether they do. Here's how to read the specs — and which masks pass.
Read →
The retinoid family is the most evidence-backed category in anti-aging skincare. The differences between retinol, retinal, retinaldehyde, and tretinoin are not marketing — they are chemistry that determines how quickly and how strongly each form acts on skin.
Read →Cotton pillowcases create mechanical stress on skin overnight that works against the actives you apply before bed. Here's what the research says about silk, and which pillowcase is worth the investment.
Read →Most peptide serums contain concentrations too low to do anything. We ranked the top options on Amazon by actual active ingredient evidence, not marketing.
Read →