what is d main reason and cause of whiteheads ?
Whiteheads are composed of lipids/oils and sebum, that combine with cellular fragments. Because whiteheads tend to be more solid than liquid, they plug the hair follicles and grow in size, sometimes developing into painful acne cysts.Whiteheads are closed from the skin’s surface by cellular debris at the follicle opening. Because they have no contact with oxygen, they do not oxidize or turn brown, as blackheads do. They form a light or yellow-white lump and are called milia (or milium, singular). Bacteria enters the follicles, leading to acne infections, especially cystic acne.