What Causes Oily Skin?
Having a congested skin can often be referred to clogged pores, and the cause of most acne problem. Clogged pores are clinically called comedones, or blackheads (open comedones) and whiteheads (close comedones).
Deep within each hair follicle, sebum normally flows from the sebaceous glands to reach the skin to keep skin moist and pliable. When the routes or pores being clogged or congested, sebum is trapped within the pores and form comedones or blackheads and whiteheads.