
Daily broad-spectrum sunscreen on face and hands, all year. It's the one "anti-aging" habit here with a randomised trial showing slower skin aging. Seeing your own sun damage (a UV photo) helps people stick to it.
S Evidence: strong. Large trials or many studies, pointing the same way.
P Evidence: promising. Good studies, but small or few. Use it and keep checking.
Hughes et al. 2013 (randomised trial, 903 people, 4.5 years) · Williams et al. 2013 · Brinker et al. 2018.
Not medical, legal or financial advice.
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