The needles on the Beauty BioSscience GloPro device do not go deep enough to turn over cells or product collagen. They do help your beauty products to penatrate better. Do research on micro-needling. There is a lot to learn about it. Be sure if you decide to do this, buy your roller from a reputable company. Sterilization is a really important part of the process and also the products you use before and after are really, really important. You have to be careful especially after using the roller. There are several really good threads about this subject in the Beauty Forum. Just type in the search box above: micro-needling or derma-rolling. Hope this helps.