Derma pen is well known as a very helpful skin rejuvenation microneedling device. Usually, the skincare products can hardly be fully absorbed when using bare hands to conduct daily skincare routine. However, the dermapen treatment can create numerous micro channels on the skin for the products to be better absorbed. Moreover, it creates micro injuries on the skin to stimulate the self-healing of skin cells, during which process the new collagen will form so as to rejuvenate the skin. The dermapen helps with multiple facial problems, such as acne, skin dehydration, wrinkles and fine lines, uneven skin texture, acne scars, enlarged pores, stretch marks, loose and sagging skin. Recently there are several popular representative derma pens, including derma pen Dr.pen series, Dr.pen ultima, derma pen MYM, derma pen uhooma.