What the evidence supports, what the marketing adds on top, and how to tell the two apart before you spend.
These are the pages I write when the same question keeps coming back and no review is the right place to answer it: what a wavelength actually does, why irradiance without a distance is a meaningless number, or how to read an FDA clearance instead of trusting a badge on a box.
I am not a dermatologist. On anything with a real safety stake, IPL eligibility first of all, I tell you what I do not know and I send you to someone qualified. A guide that pretends to certainty it does not have is worse than no guide.
Latest guides
- Are LED face masks safe? Eyes, warranty, returns and what happens after you pay
Safety and support is the part of an LED mask you only discover once you’ve paid: whether the eye shields do anything, what the warranty … Read more - Are LED masks worth the money? How I judge the price of every mask I test
An LED mask costs between $250 and $800 in the US, and the price tells you almost nothing about the light inside! I’ve paid $799 … Read more - FDA-cleared LED mask: what it proves, and what to check
When I test LED masks, I include the criteria “Proof” to to verify the brands’ claims and their validity by consulting their sources. Almost all … Read more - How many LEDs does an LED mask need? The coverage criteria explained
Coverage is the number of light points an LED mask puts on your face, how evenly they’re spread, and which zones get nothing. It’s the … Read more - LED mask irradiance explained: what mW/cm² means, and how I assess it
Irradiance is the amount of light an LED mask puts on your skin, in mW/cm². It’s the number that decides whether a 10-minute session does … Read more - Comfort of LED masks: Are LED masks comfortable? How I assess it
The comfort of an LED mask is very important: if you use it three times a week, the sessions need to be pleasant to maintain … Read more - LED mask before and after: what results to expect, and how I judge them
Results is the heaviest criterion on my grid, and the one where most LED masks score lowest. I look at two things: the results on … Read more - Which LED mask does Kim Kardashian use? The JOVS 4D laser mask, and what you need to know
In late October 2025, Kim Kardashian told her Instagram followers she’d found a face mask while scrolling, and that it wasn’t an LED mask but … Read more - Selena Gomez’s LED mask is the Nooance, and I have tested it: what you need to know
On June 10, 2026 Selena Gomez posted 2 Instagram stories wearing a red-lit LED mask with NOOĀNCE printed across the forehead. That LED mask is … Read more