Where is hair heavily distributed, with one exception?

Hair is heavily distributed across various parts of the human body, including the back and scalp. These areas have a high concentration of hair follicles that contribute to the overall hair coverage of the skin. However, the palms of the hands and the soles of the feet are notable exceptions, as they have very few or virtually no hair follicles.

The skin on the palms and soles is adapted for functions specific to these areas, such as grip and protecting against environmental factors. The lack of hair in these regions is part of a specialized structure that enhances tactile sensitivity and functionality. Thus, while hair is abundant on the back and scalp, it is significantly reduced on the palms and soles, with the palms being the main exception due to the specific functional requirements of those areas.