Laser {Ans: Treatment that can remove blood vessels, hair follicles, and some wrinkles is known as}5 {Ans: Ultraviolet rays make up ______ percent of natural light and are also referred to as cold rays or actinic rays}Wavelenght {Ans: The distance between two successive peaks of electromagnetic waves is known as a}Violet ray {Ans: Another name for the Tesla high-frequency current is the}iontophoresis {Ans: The process of introducing water-soluble products into the skin with the use of electric current is known as}Electrode {Ans: An apparatus that conducts the electric current from the machine to the client's skin is called}