If we had kept count of how many times we rave about the benefits of wearing sunscreen in a day, wed still be counting. Everyone knows we should be wearing SPF but still, we often end up making mistakes during the application process. If youre wondering which slip-ups were referring to, keep reading.Applying SPF just before leaving the houseIf youre slathering on sunscreen just before leaving the house, chances are that the formula will get diluted with your sweat or wiped off before it can actually work. For best results, apply SPF at least 15 minutes before you step out. If youre applying make-up on top of sunscreen, make sure the formula has had a chance to dry down before you use anything else.Relying on only SPFNo sunscreen can 100 per cent block the suns rays which is why it is recommended you take extra measures to protect your skin from UV rays. Enter, hats, sunglasses, and ultraviolent protection factor clothing. When youre out, it may not always be possible to apply sunscreen all over your body and face. This is when these three elements can be super helpful!Skipping spotsDid you remember to apply sunscreen to your lids? What about between your toes, on your elbows, on the tips of your ears, and your nape? These are some of the less obvious spots that you could be skipping.Using expired productsNever use any beauty product past its expiry date, especially sunscreen. This is because the ingredients can spoil and become less effective at providing a film on the surface of the skin. This essentially means that it wont protect your skin as well as it once did. The easiest way to find out? SPF is usually good for three years from the date of manufacture so if the bottle is older than that, throw it away. Another giveaway will be a change in consistency and smell. If the product starts pilling instead of sinking into your skin, consider that an indication that the formula has been compromised.Not using enoughOne of the oldest mistakes that almost every beauty lover is guilty of making: Being stingy with sunscreen. Did you know you need a shot glass worth of sunscreen for your whole body? Lets begin with how much you need to use on your face. Squeeze out product in two straight lines on your index and middle fingerthat is the minimum amount you need for your face and neck.