Where are hair follicles not distributed on the human body?

Hair follicles are primarily responsible for hair growth across most areas of the human body; however, there are specific regions where they are notably absent. The palms of the hands and the soles of the feet are unique in that they do not have hair follicles. This absence is due to the skin's specialized structure in these areas, which is adapted for greater protection and sensitivity, allowing for enhanced tactile function and grip. The thick skin on the palms and soles, combined with the presence of sweat glands and no hair, contributes to their distinct characteristics.

In contrast, areas like the chest, back of the neck, and inner thighs have a rich distribution of hair follicles, which contribute to body hair in those regions, making it clear why the palms and soles stand out as exceptions in this regard.