Microneedling face treatment also known as collagen induction therapy is the penetration of tiny thin needles into the skin at various depths from approx from 0.1mm to 1mm depth. At these depths, they target the hypodermis layer to cause an inflammatory response that triggers the natural production of collagen and elastin.   As the needles penetrate, they cause trauma to the skin. This stimulates the fibroblasts (the part of our immune system that binds the skin together) and triggers a natural healing response that boosts the collagen and elastin that's made naturally by the body.