Sunscreen in Kenya: What SPF Actually Means and What to Buy

There's a persistent myth that melanin is a complete sunscreen. It isn't. Dark skin has a natural SPF of roughly 13 — helpful, but nowhere near enough for Nairobi's UV index, which regularly hits 'extreme' between 11am and 3pm.

What SPF50 actually means

SPF measures protection against UVB, the burning rays. SPF50 blocks about 98% of UVB; SPF30 blocks about 97%. The bigger deal is 'broad spectrum', which also covers UVA — the rays responsible for premature ageing and deeper skin damage.

The white cast problem

Many sunscreens use mineral filters that leave a grey-white film on darker skin. It's avoidable: look for chemical or hybrid formulas, or mineral ones labelled 'tinted' or 'sheer'. And don't stop at skin — your eyes need protection too. A pair of UV400 sunglasses is as essential as the lotion itself.

How much and how often

Two finger-lengths of sunscreen for face and neck, reapplied every two to three hours outdoors. The best sunscreen is the one you'll actually wear daily — which is why texture matters more than any number on the tube.