Question

Why does skin become oily in humid weather?

Answer 1

Sebaceous gland

1. The sebaceous gland produces sebum, an oily secretion that makes the hair and the outer surface of the skin oily and waterproof to keep the epidermis supple and to prevent water loss by evaporation.
2. Temperatures and humidity levels increase in the summer.
3. These changes in the atmosphere cause the sebaceous glands to produce more sebum.
4. This creates unwanted facial oiliness.