Skin & Hair
Skin and hair, past the beauty hype.
Few categories are sold harder — or more loosely — than skin and hair. We separate the biology from the beauty pitch: what these compounds actually do, where the evidence is thin, and which ones regulators have flagged. Then we point you to a licensed provider. We don't diagnose, prescribe, sell, or promise you a glow.
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The skin & hair guides
Glutathione, honestly
The "master antioxidant" behind the skin-brightening craze — what it really does, why oral absorption is poor, and the FDA warning on injectable skin-lightening.
What "not FDA-approved" really means
The rules underneath the skin-and-beauty injectable menu — and how to tell a legitimate source from hype.
More skin & hair topics — including copper peptides (GHK-Cu) — are on the way, each covered the same way: sourced, honest, and clear about what isn't proven.
See all guides →