Finding the right stuff!

My son is currently suffering from acne and its only going to get worse from my experience. I am not sure about tretinoin because I have not heard of it by that name. I will have to do some research on it and see what the outcomes are and if there are any before and after photos available to show what it can do. Who knows if I can use it myself because I am still getting acne at my age, so not fair!