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Light Therapy Lamps in Winter: What the Trials Support
Trials support a narrow protocol for light therapy lamps: 10,000 lux, ultraviolet filtered, 30 to 45 minutes in the morning through the dark months. The rest of the shelf is thinner.
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The Retinoid Ladder: What the Strengths Actually Mean
Retinol is 20 times less potent than tretinoin because skin must convert it, per a 2006 review. The retinoid ladder, rung by rung, in trial evidence.
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Inside Supplement Regulation: Who's Checking What's in the Bottle
The FDA does not approve supplements before sale; companies carry the safety duty. A walk through the oversight file, from DSHEA to MedWatch alerts.
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Dietary Supplements: What You Need to Know Before Buying
What dietary supplements are, how the law regulates them, and the questions to ask before you buy, explained without hype.