Apocrine and Eccrine Sweat Axillary sweat is composed of two principal constituents: (1) the more free-flowing sweat produced by the eccrine glands and at times perhaps also by the apocrine glands, and (2) the more viscous product of the apocrine glands, which largely resemble the milk glands. Like Rothman, 1 we have expressed the opinion that the apocrine glands may produce two different types of sweat, one more viscous, the other less viscous and thus more like the product of the eccrine glands. 2 In any case, the major portion of excessive sweating from the axillas is made up of the eccrine type of sweat, whereas only a minor portion is of the milky apocrine type. 2a,b Although it is still controversial whether the quantity of apocrine sweat itself may not play a greater role than has been suggested, for all practical purposes it is mainly the eccrine sweat