This machine works on RF system and needle seal The idea was first proven in the US and is excellent for healing and removing various dermis lesions that failed laser treatments MNRF works on RF waves with minimum invasion into the skin with 36 electrodes. It provides direct heat to the epidermis and dermis Precise depth between 5.0 mm to 5.1 mm. The low frequency RF frequency is effective and allows the ability to achieve partial and continuous treatment patterns. Offers minimal but effective risk and therefore does not require long and painful healing time regardless of skin type