There have also been anecdotal reports of diluted apple cider vinegar helping with acne when applied to the skin, but I didn't find any strong research to confirm this. (healthline.com)
If you want to do yourself a favor, I would try drinking a cup of diluted apple cider vinegar in lemon water. (candidablog.com)
It is useful to clean his paw pads daily with diluted apple cider vinegar (10 % dilution) or saline solution. (petsmagazine.com.sg)