According to some expert beliefs based on evolutionary theory, long hair is considered more attractive.
The Evolutionary Perspective on Hair Length and Attractiveness
Experts believe that the perceived attractiveness of long hair is rooted in evolutionary biology. The core idea is that the length and quality of a woman's hair can serve as a visual indicator of her health and vitality.
Specifically, it is thought that long hair signifies a woman's body's inherent ability to bear children. Healthy, lengthy hair requires significant nutritional resources and indicates overall physical well-being. This perceived health and ability to reproduce makes female fertility a key marker of human beauty from an evolutionary standpoint.
Therefore, from this particular evolutionary perspective, long hair is seen as a sign of health and fertility, which is interpreted as attractive.