Sunscreen is essential in a sunny climate like Vietnam's. Choose broad-spectrum protection against UVA and UVB, SPF 30 or higher for everyday use and higher for long hours outdoors. Oily skin suits gels and light fluids; dry skin suits creams; sensitive skin may prefer mineral filters. Apply enough and reapply every few hours if you sweat, swim or stay outside. The list is ranked by the independent usdxu score from real sales and ratings.