The word “attractive” seems to be hard to define. Everyone has a unique perspective on what they find attractive in people, and in general. Turns out that there are certain traits/characteristics/aesthetic values that people are consistently drawn to. Symmetry, color, and shape are found to be attractive to the human eye in the same ways across the board. People (and animals) are attracted to symmetry. Different colors evoke the same reactions/feelings amongst people. Similarly, different shapes seem to represent the same personality traits. What people find unattractive has also been found to be consistent among people. In the end, beauty is in the eye of the beholder.
To learn more about the psychology of attraction, check out the infographic below, presented by Iconic Displays.
Infographic by Iconic Displays