Light therapy that’s actually been studied.
Honest reviews of red-light masks, panels, and devices — grounded in clinical trials and independent lab data. So you can care for your skin with something that works, not just something that glows.
- cited studies
- 26
- devices measured
- 20
- paid placements
- Zero
- Wirecutter-style rigor for light therapy
- Independent spectrometer data
- Every FDA clearance verified
- No manufacturer pays for coverage
Where most people start
The questions we hear most — answered with evidence, not marketing.
Best LED Face Masks, Honestly Compared
Which masks hold a real 510(k) clearance — and which claim 70 mW/cm² but deliver 8 on a spectrometer.
2,841 words · 4 cited RCTs →
Red Light for Hair Growth: FDA-Cleared and Evidence-Based
The three laser caps with genuine clearances, the trials behind them, and what “cleared” really promises.
2,526 words · Evidence: Strong →
Side Effects, Dangers & Contraindications
Low-risk, not no-risk. Who should skip it, what the eye-safety data says, and the myths to ignore.
2,354 words · honestly graded →Latest articles
When to Start Using a SAD Lamp
When should you start using a SAD lamp? The evidence supports morning sessions and a consistent routine, but no trial tested the calendar question. Here is how to time your season.
Do SAD Lamps Actually Work?
Do SAD lamps work? The Can-SAD trial found light therapy matched fluoxetine for seasonal depression. Here is what the evidence supports and where marketing claims go beyond it.
How to Choose a SAD Lamp
A measured guide to choosing a SAD lamp: why 10,000 lux is only a starting point, and how distance, screen size, UV filtering, and daily positioning decide the exposure you receive.
SAD Light Box Buyer's Guide
How to buy a SAD light box that actually delivers light: why lux only counts at a realistic sitting distance, how screen size and UV filtering compare, and what the evidence supports.
Best Budget Red Light Therapy Devices (2026): What $100-350 Actually Buys
A $250-350 tabletop panel measured 51.7 mW/cm² on an independent spectrometer. Where cheap red light therapy genuinely works, where it fails, and four budget picks graded on evidence.
Best Handheld Red Light Therapy Devices & Wands (2026): Spot Treatment, Honestly Graded
One handheld holds a real 510(k) (Solawave, K232863) and none has independent output data. Which wands earn a spot-treatment role, the session math, and when a panel or mask is the smarter buy.
We grade the evidence, so you don’t have to trust a brand.
Every claim on the site carries an evidence badge — Strong, Moderate, or None — tied to the actual clinical literature. No stars we made up. No sponsored enthusiasm.
- Collagen & wrinkle reductionStrong · RCT
- Androgenetic hair lossStrong · RCT
- Acne (blue + red)Moderate
- Fat loss & “detox” claimsNo evidence
Are you actually getting a dose?
Most people underdose without knowing it. Enter your device’s numbers in this free calculator and see your J/cm² against the ranges the research supports.
See our device picks →