how to apply color on a female or male face and body with blend tool
These are photographs? You can use the many color adjustment tools under Effects/ Adjust, and you can also use the airbrush and smudge tools in Photo Paint. You'll need to experiment with the settings. With the airbrush, I usually adjust the transparency and ink amount to get a very fine spray.
The Blend tool is for vectors...(maybe I didn't understand the question...)