It works best with highlighted white areas, but also has good results with dark objects with some transparency, does not work with all photos, just try different ones, sorry but no magic here. This app uses science to see through clothes, like x-ray, is not another joke or fake app to undress, remove clothes ,undress, get people naked, or xray bra underwear prank, no nude / nudity or sexy images inside, our revolutionary algorithm use the brightness, lights, contrasts and color channels in an optimal combination for each picture.