UV Avoidance / Sun Safety / Photoprotection
The lifestyle habits and practices that reduce cumulative UV exposure beyond just sunscreen application. The UV Index (UVI) is the primary guide: UVI 3+ warrants sun protection; UVI 6+ requires hats, clothing and shade in addition to SPF. UV-protective behaviours include seeking shade between 10am–4pm (peak UV hours), wearing UPF 50+ clothing and wide-brim hats, and applying broad-spectrum SPF 50 generously and consistently. UVA (aging rays) penetrates glass and clouds — car windows, indoor proximity to windows, and overcast days still deliver significant UVA dose.
In the US alone, approximately 90% of non-melanoma skin cancers and a majority of melanomas are attributed to UV exposure. The compounding benefit of daily sun protection, started young and maintained consistently, is greater than any other single anti-aging intervention.
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