Common causes of dandruff include scalp dryness, oily skin, or a fungal infection. Anyone can experience ... Treatment: To treat an oily scalp, shampoo your hair regularly to remove excess sebum.

Dr. Angela Lamb: So for people that have straighter-patterned hair, and like I said, what happens with that patterned hair is the oils, the sebum ... your scalp getting infected from all the ...

An international team of scientists have found that sebum, or the grease that coats hair, is what allows polar bears to stay insulated and thrive in some of Earth’s most punishing climates.

It's an oily substance that comes from our hair glands. In humans, sebum helps protect your skin from irritation, infections and even helps regulate your body temperature. Polar bears produce a ...