/diy/ - Do It Yourself

Hey medfags/chemfags, see this stuff?
It's petroleum jelly-based. If I heat it in a microwave to the point where it's liquid enough to mix something else in with it, does that destroy the antibiotic properties of it?
Reason: I want to add tea tree oil in with it.
Why: Nothing illegal, immoral, or fattening, just treating a skin infection. Beyond that, the details aren't particularly relevant.

Thank you, in advance, for your attention and expertise.