overworking your liver?

Hi everyone!
So, I've done about ten Liver Flushes over the course of ten years and I just completed the tenth one a couple of days ago. It works wonders. I ALWAYS get told I look 10-12 years younger than I actually am.
Anyway, I was talking to my dad about doing the flushes two weeks after each other and he's worried that I may be overworking my liver especially with the Epsom Salts along with the olive oil and stuff. Now Im a little worried too. Does anyone else think that you should wait longer than two weeks to do another flush?
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