So now you know how often you should you apply sunscreen (and reapply!) you need to make sure you know how to apply sunscreen correctly. This is important as improper application can leave your skin exposed.
You should be using at least 2 tablespoons for your body and a blob the roughly the size of s 10p for your face. If you are using a spray, spray all over until you have and even glazed covering. Dot the sunscreen from the bottle all over your body and then gently massage into your skin until it is all gone. Make sure to cover your ears, back of hands and neck - these are often missed places!
Remember that all sunscreens are different, so make sure to check the instructions on your bottle for application advice also.