Modern people attach great importance to their external image, especially in the hot summer. Girls who love beauty always like to wear some cool clothes, but there is a headache. It is easy to expose the hair under the arm. It is embarrassing. At this time, girls will choose a variety of hair removal equipments to solve this problem. Therefore, hair removal has also become a popular item in beauty salons. Recently, DPL hair removal machine has become a popular beauty equipment product, and has won the love of many beautiful women, so what is the working principle of DPL hair removal machine?