Anti-aging & longevity

Separate well-supported skin-aging guidance from promising ideas that still need stronger human evidence.

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Does sunscreen actually prevent skin aging?

A randomized Australian trial supports regular sunscreen use for slowing measured skin photoaging. Its hand-skin outcome, population and commercial support help define what the result can—and cannot—tell us.

2 min read · Updated Oct 9 · Sources attached

Collagen Supplements and Drinks: What the Evidence Actually Shows6 min read · Updated Jul 17

Peptides in Skincare: What the Evidence Actually Shows5 min read · Updated Jul 17

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Collagen Supplements and Drinks: What the Evidence Actually ShowsOral collagen peptides have a real, if modest, research base behind hydration and fine-line claims — but the strongest, least-biased trials find far less benefit than the marketing promises, and topical collagen can't reach your skin at all.Jul 12, 2026 · 6 min read
Peptides in Skincare: What the Evidence Actually ShowsPeptide serums promise firmer skin by 'signaling' collagen production. Here's what the actual randomized trials found, why those studies are smaller than the marketing suggests, and how peptides really compare to retinoids and sunscreen.Jul 12, 2026 · 5 min read
Does sunscreen actually prevent skin aging?A randomized Australian trial supports regular sunscreen use for slowing measured skin photoaging. Its hand-skin outcome, population and commercial support help define what the result can—and cannot—tell us.Jun 10, 2026 · 2 min read