Do LED Teeth Whitening Kits Work, or Is It Just the Gel?
LED lights are the star of most whitening kits, but does the light matter, or is the gel doing all the work? Here's what the research found.
Category Science & Evidence
This category digs into the research behind popular beauty tech claims, separating what’s really been studied from what’s just good marketing. We look at clinical studies, safety data, and expert commentary to answer questions like whether a technology does what it claims, or whether a popular trend holds up under scrutiny. If a claim sounds too good to be true, this is where we go looking for the evidence.
Skin Cycling for Beauty Devices: Your Skin Needs Rest Days Too
Skin cycling taught us to rest between actives. Does the same logic apply to RF, laser, and microcurrent devices? Here's what the science suggests.
RF, LED, Laser, or HIFU: Which One Actually Builds Collagen?
RF, LED, laser, and HIFU all claim to boost collagen. We compared the clinical evidence behind each and which one actually works best for you.
From Cryo-Facial to Ice Rollers: What Cryotherapy Can Do for Skin
From med spa cryo-facials to $20 ice rollers, cold therapy claims a lot. Here's their mechanisms, expected results for your skin, and what scientific evidence shows.
How We Evaluate Beauty Tech Claims: A Reader’s Guide to the Evidence
"Clinically proven" and "FDA cleared" don't always mean what you think. Here's the evidence framework we use to evaluate every beauty tech claim on this site.
Why No Beauty Device Can Replace Your Sunscreen
If beauty tech can now monitor and repair sun damage, do you still need sunscreen? The answer is yes — and the science explains exactly why.
Smart Mirrors and AI Skin Scanners: The Science Behind the Diagnosis
AI skin mirrors seem to be the future, but most coverage skipped the harder question: what are these tools actually measuring, and how much should you trust the output?
“Ion Infusion” and “Nano Mist” Devices: What the Science Actually Says
Ion infusion and nano mist devices sound scientific. But do the claims hold up? We ran them through the science so you don't have to.
RF Fat Loss Myth Busted: What Safety Studies Say About It
Does home RF actually melt facial fat? Can it cause fat loss as a side effect? We run the claims through the science and through the FDA's own safety warnings.