How high is the attention you pay to the appearance of your male co-workers, clients, etc?

Hi women! <br><br>I work in a place where a lot of my co-workers are clients, and I have to interact with about 100 people. Lately I have honestly been wondering what am I allowed to do out of a pure interest in how people look, and where is the line where I cross inappropriate concern for appearance or harassment. I generally don’t really look at people I don’t know for more than 2 seconds, or I do it in a way that I don’t want to make them feel uncomfortable. However, I do tend to take a closer look at people that I find intriguing or interesting.<br><br>I don’t have any ill intentions, and my actions are motivated by pure interest, not anything else. Would you be offended by that?