By eHow Fashion, Style & Personal Care Editor
Rate: (3 Ratings)
High frequency sound has been used since the 1980s for cosmetic purposes. It produces heat in the deeper tissue, the rapid vibrations producing a massaging effect and the cavitation effect creating microscopic bubbles of oxygen. These effects from high frequency sound result in a variety of biological improvements. The following steps will show how to use high frequency sound on facials.
eHow Fashion, Style & Personal Care Editor