I'd be doing a LOT of Liver Flushing and environmental/diet clean ups, for all the zapping in the world will be WORTHLESS long term without that.
To be specific, if you think your Acne problem is sourced in the skin, you'd need a skin anatomy slide sample to PLATE ZAP your skin. This will DIRECT the frequencies/energy pulses/electricity to the SKIN which is where you need it, or even more detailed areas where Acne is sourced in problem: http://www.drclark.net
see the bottle copies PDF there for what slides are involved for the SKIN and layers of body tissue for appropriate use in PLATE ZAPPING