Not something I have suffered from badly and any that might 'arise' had completely dissapeared by the age of 35 without scars. As in a previous post about noses, you seldom see bad acne in, or is than on, young Australians.
But boy do some of the overseas, especially Asian, students have it. I feel like going up to them and telling them that there is now good medical treatment for it. Please, no matter the expense, avail yourselves of it while you are here in Oz. You will be thankful later if life for the lack of scarring, if not now.