Leather fat is secreted by sebaceous glands place, and of activity of adjusting control sebaceous glands is sex hormone: Androgen can promote the exudation of leather fat, estrogen has adverse effect.

• 皮脂由皮脂腺所分泌，而调控皮脂腺活动的正是性激素：雄激素能促进皮脂的分泌，雌激素则起相反的作用。