Final answer:
Excessive oil flow from sebaceous glands is termed seborrhea. Sebaceous glands produce sebum to protect and hydrate skin and hair, but overproduction can lead to greasy skin and acne.
Step-by-step explanation:
The excessive flow of oil from the sebaceous glands is called seborrhea.
Sebaceous glands, located within the dermis of the skin, are responsible for the production and secretion of an oily substance known as sebum. This sebum is critical in maintaining the skin and hair's hydration, offering protection and waterproofing properties.
Additionally, sebum has antibacterial properties, preventing the growth of harmful bacteria on the skin's surface. However, when these glands produce excessive amounts of sebum, this can lead to a condition called seborrhea. Seborrhea can contribute to the appearance of greasy skin and various skin problems, including acne, due to blockages in the hair follicles caused by the buildup of oil and keratin. Proper hygiene practices and sometimes medical treatments are necessary to manage this condition effectively.