Desc: The Science of Sex Appeal: With Alan Dunn, Alyson Reed, Farrah Shaikh, Landon Ashworth. The elusive qualities of sex appeal are examined through the lens of science in this probing documentary, which reveals the evolution and function of every component of human attraction. In this study of the science behind "chemistry," you'll learn how the subtlest sounds, sights and smells can affect sex appeal, and how genetic, hormonal and neurological factors create sparks between people.