A demographic CHARACTERISTIC is generally the statistical INFORMATION about a population.

This could be factors like;

Age

Health

General income

Educational level

Race

Gender

Usage of hair OIL could be affected by the demographic characteristics in various WAYS like;

Gender would affect how the market of a hair oil product will be.

In a population where most of the people are women,the oil will be more marketable compared to a situation where most of the people are men.

The age of the population of a CERTAIN place would influence the market demand of a hair oil since people of the middle age would demand more of the product than those of a very tiny age or very old.

General income of the people in a certain population will affect the demand of the hair oil since when the income is high,the rate of disposable income will also be high leading to a high demand of the oil and vice versa.

When a population has high level of education ,they tend to know the benefits of using hair oil compared to an uneducated population.

This will then lead to a a higher demand of the hair oil by the educated population than the uneducated population.