.....The only sunscreen that can provide a guaranteed 97% protection from harmful UV rays is now back with an improved formulation. Indian weather is as hot and humid as it gets but fret not with the new sweat proof formulation, Lakme Sun Expert SPF 50 is the perfect long wear sunscreen for those extra-long days. It provides broad-spectrum UV protection which means it guards your skin from both UVA and UVB rays. But high protection does not mean heaviness or stickiness.