... 15MM, acts ondermis layer, and very low influence on epidermis, collects main energy on targettexture, so-called very safe.3-2. ... radiofrequency energy which can down to hypodermal 15MM, directly acts on hairfolliculus, make their melanin inhale more energy, so that has ... therapyThe before IPL equipment, it doesn’t have effective therapy on acne skin, but now, weuses IPL and RF technique together, ...