In two recent articles you mentioned two types of fungus that can grow on greasy scalps.
“Sebum is composed of fatty acids which are the food source of a fungus
called Malassezia Globosa. This fungus is always present on the scalp,
but when the level of sebum increases the fungus proliferates resulting
in scalp itching, tenderness, flaking, inflammation, spots, dandruff,
seborrheic dermatitis and other problems. Washing the hair and scalp
with shampoo controls the level of sebum on the scalp and reduces the
chances of scalp disorders developing. All these problems are commonly
seen when hair is not washed frequently.
Another factor is that
as the Malassezia Globosa fungus breaks down the oil it gives off an
unpleasant odour, which may not be noticed by the person themselves but
almost certainly by other people.” http://thebeautybrains.com/2014/01/20/is-the-no-poo-method-safe-for-hair-and-scalp/
"A greasy scalp is a breeding ground for a specific fungus called
Malassezia furfur. The fungus feeds on the oils and releases free fatty
acids which can irritate your scalp." http://thebeautybrains.com/2014/01/24/why-does-greasy-hair-make-my-scalp-ache/
Are there any kinds of little bug creatures that grow in greasy scalps?