How long after I finish my antibiotics (Rifaximin) treatment can I get laser hair removal done?

The salon in which I get LHR done told me I needed to wait two months because Rifaximin is a broad-spectrum antibiotic. However, when I’ve taken antibiotics in the past, I’ve only had to wait four weeks. Additionally, I only completed 1.5 days of treatment since my symptoms got worse. So, do I need to wait eight weeks or is four weeks enough? Thank you.