Does sunscreen really prevent skin ageing and cancer?
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3 Answers
Yes — this is one of the best-supported claims in dermatology. Daily broad-spectrum SPF 30+ reduces squamous cell carcinoma and melanoma risk and demonstrably slows photoageing. Reapplication every 2–3 hours in sun matters as much as the initial application.
Indoors away from windows, the need is minimal. Near windows, UVA passes through glass and contributes to pigmentation and ageing.
For Indian skin tones, sunscreen matters most for preventing tanning, melasma and post-inflammatory pigmentation, which are far more common complaints than skin cancer.
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