Distribution: skin of armpits, groin, bearded regions of face, areolae of breasts.
Location: mostly in deep dermis; secretes into hair follicle
Secretes perspiration, same as eccrine glands (water, ions, urea, uric acid, ammonia, amino acids, glucose, lactic acid), in addition to lipids & proteins
Function: stimulated during emotional stress and sexual excitement. Onset at puberty.