Final answer:
Hair does not grow on the palms, soles, or lips, which have glabrous skin adapted for sensitivity and protection without hair.
Step-by-step explanation:
Three places on the body where hair is NOT found are the palms, soles, and lips. This can be attributed to the unique type of skin in these areas known as glabrous skin, which is thicker and contains more touch receptors but no hair follicles. Hair has important homeostatic functions, such as head hair preventing heat loss and hairs in the nose trapping particles, but glabrous skin is adapted to provide sensitivity and protection without the presence of hair.