Why Do Arnica, Neem, Saw Palmetto, Ubiquinone and Other Supplements Meant to Help with Acne Break Me Out?

I tried the supplements above to help with swelling, bruising/hyperpigmentation,hair thinning, post-acne pitting, & hormonal acne that came about/persisted thru 100 mg/day of aldactone (3 yrs). I take a multivitamin, am on Monodox now, and try very hard to watch what I use on my face. I stay away from biotin and B12. But I have thick,oily skin that is still cystic after yrs of Accutane (before aldo). Why do these supplements break me out (all it takes is 2 days to see increased body/face acne)?

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