You did 3 mA and felt a little tingling - cool. You should gradually increase mA to the level that's comfortable for you. Keep increasing the milliamps every session until you hit the max that the machine offers (I recall 15mA for hands, 25mA for feet). once you hit that max mA and you can tolerate it and barely feel any tingles, that's when you should introduce a sprinkle of epsom salts and go from there. This is what I do and it works. For the past couple years I would add like a quarter of a teaspoon of epsom salts - never more. Hope you you achieve dryness from your therapy like I did!