German researchers at The Friedrich Schiller University of Germany have successfully demonstrated a new laser based technique that can image deeper layers of the skin. It enables to measure (non-invasively) the level of damage caused to the skin out of aging and exposure to sun. The technique measures relative quantity of collagen and elastin by a single factor. The high values of the factor resembles higher collagen and the lower values resembles to elastin content. The finding show women's skin ages faster than men.

The current procedure that dermatologists adopt to check the collagen network of a patient, is to remove a sample of the tissue and analyze it in the lab, under a microscope. Although the technique is still at the experimental stage, the hope is that someday it would be useful in studying skin diseases that affect the collagen structure. The claims of cosmetic products, promising increase in collagen can be easily put to test, if the technique is fully developed and implemented.