Hi. I took my daughter to see a homeopath for another issue (anxiety) and while we were there I asked about her experience/success in treating acne. She said in her experience it is very hard to treat any skin issues with homeopathy. She said she has had limited success treating acne, some people have seen improvement but some have not seen any improvement. So you may have to try a few 'remedies' before you find one that works.She did suggest that there is a link between diet and acne and advised my daughter to avoid dairy products and oils (anything cooked in oil or deep fried is bad).
This was our first experience with a homeopath. The first visit was over 2 hours long and was very thorough as far as finding out everything about my daughter so I was quite impressed.
As a side note the 'remedy' that she gave my daughter for her anxiety has worked extremely well.
Good luck.