Basically speaking, when you get a Derma Roller, you get a bunch of needles on a handle.  There are 192 needles in total, and it’s supposed to actually eliminate stretch marks, scars, and wrinkles.  Scary thought right, 192 needles running across your skin, are they sanitary?  But apparently, they don’t actually get to the deep layers of the skin.  They only barely pierce the epidermis, which would imply it doesn’t cause bleeding, just a sort of scratched look on the surface. 

It apparently puts tiny little dots in the skin that are actually too small for the human eye to see, so theoretically it won’t be visible.  Then your skin works to repair itself, it seems a bit like laser therapy in that way.  Anyway, it then pushes new cells to the surface and repairs damaged skin in general.  They also claim that it helps your skin to better absorb the skincare products you are already using.  This I’ve definitely heard before from those products that claim to send negative and positive charges through your skin.  Basically, they are saying that it’s your other products doing all the work without actually saying it.  With all things considered, I am skeptical to say the least about Derma Rollers.  But at the very least, they’re interesting.