Oh No Mom

So my son is at the age now where he is starting to get pimples. He is not very happy about that but as I told him some people get them some don't. So I have been on the look out for a natural acne treatment or something gentle on the skin. I have very sensitive skin and I tend to be overly cautious about what I buy. I don't want to use harsh chemicals on my face and certainly don't want that for my son either! Please let me know if you know of something. My skin is extremely dry and I very rarely get a pimple. I am really quite clueless about that kind of stuff, my concern is finding a good moisturizer!