High-frequency skin treatment uses a gentle, oscillating electrical current to stimulate skin cells, promoting collagen and elastin production, increasing blood circulation, and creating oxygen molecules that kill acne-causing bacteria. A glass electrode containing neon or argon gas is passed over the skin, causing a tingling sensation and a faint ozone smell. This process results in improved skin complexion, minimized fine lines, reduced inflammation, and clearer, more revitalized skin. High frequency has been used on for over 100 years. It was invented by Nikola Tesla, and was used in medicine for antibacterial and antiviral effects.