I thought the acne problem disappearance from the pill is only a nice side effect that doesn't necessarily happen to everyone
Have you tried some medicine specifically for acne problems? (I bet you did, you mentiond a dermatologist)
And combining it with a diet and strict skin care would have some impact?
But I'm pretty sure you've tried it already
I'm not sure about the prices, but i've heard it might only take like 10 minutes with 2-3 needles in the right spot/s and you might observe some effect for a couple months. A friend from a game told me he only had a 10 minute session with 2 needles and it helped his chronic runny nose problems for the next 3 months.
Try reading about it, maybe it's not that expensive for just a 10 minute session?