This is a rapidly oscillating current with a frequency of 20,000 cycles per second. Excited? The current produces heat in the tissue and therefore has a physiological effect on the skin. There are two method of high frequency: Direct or Indirect. Direct high frequency will increase circulation, aid exfoliation, and break down pustules by having a germicidal effect on the skin. Indirect is the use of a current that is conducted through the therapist’s hands in a massage step within a facial. This will improve circulation, nourishing, deep tissue relaxation and tension removal.
This concept is taught in colleges but is not used in salons in Ireland. In mainland Europe it is a core concept.