Acne-Knowhow.com
Title
Acne Types | Acne Faces and Forms
Description
Excerpted from the website description:
- Depending on whether the pores are open or closed, comedones are called whiteheads or blackheads. When pores openings are blocked by a mixture of sebum and keratin that is blackened at the surface, blackheads are formed. On the other hand, whiteheads are closed pores filled with the secretion of the sebaceous gland that swells underneath the tissue.
