Apart from genetics, why the Koreans, Japanese or Taiwanese miss beard on their face?
The lack of prominent facial hair growth among some East Asian populations, such as Koreans, Japanese, and Taiwanese, is primarily due to genetics. East Asians generally have lower levels of androgen hormones, which are responsible for stimulating facial hair growth, than other populations.
Additionally, cultural and societal factors may also play a role. In some East Asian cultures, facial hair is traditionally associated with being unkempt or unclean, and is therefore discouraged. For example, in Japan, it is common for men to shave their facial hair daily as a part of their grooming routine. In Korea and Taiwan, a clean-shaven look is also preferred in many professional and social settings.
It's important to note that while some individuals of East Asian descent may have limited facial hair growth, there is still significant variation within these populations. Some individuals may have more facial hair than others due to a range of genetic and environmental factors.