With the weather heating up, it's time to put on more UV protection and get out those hardy cosmetics that can withstand the summer's melting sun.

There is such a wealth of lotions with different sun-protection factors (SPFs) to protect your skin that it can be hard to decide which one to buy. In Japan, factor protection goes as high as 50+.

To pick the best product, first ask yourself what you want the lotion to do: Stop your skin from tanning? Halt premature aging? Filter out air pollution?