I'm thinking about getting on an acne supplement. since i'm assuming it affects your hormones, will it kill my sex drive?

No: But I am concerned about what you plan to use as an acne "supplement". Forgive my frankness. The irrational and pricey vitamin mixtures are for suckers frightened of the evidence-based medicines that actually work. They won't help acne or alter your hormones or libido. This is the 21st century. You deserve something that works. We physicians can give it to you.