Behavioral
Daily Sunscreen
SPF 30 to 50, every morning. One of the few aesthetic moves with hard outcomes.
What it does
The rare intersection where vanity and longevity agree. A randomized, multi-year trial showed daily sunscreen slowed measurable skin aging versus discretionary use, and it reduces skin cancer risk. Apply every morning — incidental UV is most of the dose.
UV radiation drives collagen degradation, free-radical damage, and oncogenic mutations. Blocking it blocks the cascade.
What the evidence shows
Overall evidence strength: High certainty
Who it's for, who should skip
Everyone, every morning, regardless of planned time outside. The best sunscreen is the one you'll actually wear — chemical vs mineral matters less than daily use.
Stacking & alternatives
Access & cost
Self-directed — no purchase required.
Last reviewed 27 August 2026.