Just wanted to add my two cents. This product is amazing on my brother's face! I use it too but he's the real testimony!
He has, since high school, had really bad breakouts, and I mean BAD!! He's tried everything off the drugstore shelves and nothing worked! We've never had much money, so dermatologist were deffinitely out of the question. He ordered this with some money he had left over from financial aid in college and a few weeks later, HE HAD CLEAR SKIN! My parents, younger brother and I all noticed the dramatic difference. Ever since then I've used it and I love the scrub. It's usually the first thing I run out of.
I'm brown skinned so patches or pimples aren't as noticeable on me, but my older brother is light skinned and red patches easily stand out on his skin. We have combination skin also and I can't rave about this product enough! We don't use it like the box indicates, as our skin is delicate, but we use it enough that it keeps all acne at bay. Like most things, this isn't a quick fix, miracle pill kind of thing. My older brother recently ran out, and his skin is irritated and broke out, plus the cold isn't helping (our skin cracks easily in the cold). I give this product a thumbs up!
 
 
Just remember that what worked for us might not work for your son, we're individuals and so is our skin 

 , but I think it's worth a try. Maybe you could order something small like the travel pack or ask for a free sample. That way you can try it and not have to worry about having extra bottles in your medicine cabinet if you decided it's not for you.