How many genes control skin color in humans?

Polygenic inheritance:

1. Polygenic inheritance is the inheritance of traits that are determined by more than one gene.
2. Skin color is an example of polygenic inheritance.
3. This trait is determined by at least three genes and other genes are also thought to influence skin color.
4. Skin color depends on the amount of the melanin (color pigment) in the skin.
5. According to the International Federation of Pigment Cell Society, about 378 genes have been found to have an influence on human skin color.