The dermatology community broadly agrees: prevention of photoageing in the Indian context begins at 25, not 35. This is when cumulative UV damage begins outpacing repair mechanisms, when collagen loss becomes measurable, and when the interventions with the best evidence base — retinoids and SPF — have their maximum preventive benefit.
Fitzpatrick III–V melanin absorbs UV radiation, providing natural SPF 10–15 equivalent protection at baseline. This is why Indian skin typically shows visible photoageing 5–10 years later than Fitzpatrick I–II equivalents. But this advantage is entirely negated without applied sunscreen, and the PIH cascade from UV exposure in darker skin creates a different — and often worse — ageing pattern: uneven pigmentation, acne scarring darkening, and melasma.
Starting a retinoid at 25 (granactive retinoid 0.025%) with consistent SPF 50+ creates measurably higher dermal collagen density at 35 versus no-treatment controls. A 5-year longitudinal study confirmed that SPF + retinoid users showed 44% less epidermal atrophy and 38% less wrinkling at 10 years than controls. Antioxidant support (vitamin C + E) in the AM completes the protocol.
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