Most helpful critical review
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Inside the Nu Skin Galvanic Spa II
on July 10, 2009
The Galvanic Spa II device is a good, basic machine manufactured in China for Nu Skin Enterprises. The Spa generates 12 volts from the two 1.5 volt batteries, and is capable of reversing the polarity.
As the Spa is being used, the PIC microprocessor senses the current flow between the two electrodes (its tip and the skin), and regulates the amount of current flowing through and fixing it at about 200 micro amperes. It's is not a trivial function because it involves input current sensing, and output current control, in a closed loop system. The microprocessor also generates the beeps, and controls the LCD display. The program for the PIC is estimated at about 600 lines of code.
There is current modulation and current reversal built into the device. But it is surprising that there is no pulses of any kind.
It is a well constructed device, and there are three integrated circuits (including the 3 volt to ±12 volt converter), 11 transistors inside, plus lots of capacitors, resistors, and inductors.
One could probably duplicate the guts of the device for about $50 of electronic parts (the PIC16F72 is about $2.00). Of course, it's made in China, so the overall manufacturing cost for a single unit is probably around $40 when mass produced.
The ageLOC gels are very overpriced and there is nothing really new in the formulation. AgeLOC is a blend of ingredients, readily available and used in many other products. Rankine's Remedies offers an affordable, effective alternative to the costly ageLOC gels.