DS (14) won't wear suncream without a huge battle. Says his friends ask him why he looks so greasy. He burns very easily due to pale skin. It's 33C here today and we had a massive row about this as he is going out with friends. Can anyone recommend a suncream that is undetectable? He has been sunburnt in the past and it wasn't pleasant. This is one battle I feel as a parent I do have to pick.