An increase in the secretion of sebum at the same time, Mao Nang epithelial happen keratosis, Mao Nang stenosis, sebum Reserve left to form light, acne symptoms without any treatment.

• 在皮脂分泌量增加的同时，毛曩上皮会发生角化，毛曩管狭窄，使皮脂储留从而形成痤疮症状轻者无需任何治疗。