What causes greasy skin?

Oily skin is the performance of oily skin, more common in young people, middle-aged people and obese people. This type of skin cuticle moisture content is normal, sebaceous gland secretion is exuberant, sebum secretion is more, skin surface, especially facial skin oily shiny, hair sebaceous gland opening, namely pores coarse, easy to adhere to dust, retention of dirt, pores easy to show acne, prone to acne, seborrheic dermatitis and seborrheic alopecia and other skin diseases. However, oily skin has strong tolerance to external stimuli such as sunlight, skin color is often darker, skin elasticity is better, wrinkles are not easy to produce, and aging resistance. The reason for the formation of oily skin may be congenital sebaceous gland secretion, androgen secretion, partial diet containing more fat food, and excessive intake of fragrant spices.