What Causes Oily Hair?
Oily hair is a frustrating issue. There are many contributing factors, primarily including overactive sebaceous glands, frequent late-night activity, unhealthy lifestyle habits, consumption of greasy or spicy foods, and excessive mental stress. Below, we detail the underlying causes of oily hair.

What Causes Oily Hair?
1. Greasy Diet
Oily hair is often associated with internal damp-heat. Modern diets frequently include high-fat foods, as well as greasy and spicy dishes. These foods stimulate sebaceous gland activity, leading to increased scalp oil production.
2. Excessive Hormone Secretion
Scalp oil production is closely linked to hormonal balance in the body. During menstruation or pregnancy, women experience significant hormonal fluctuations—particularly elevated estrogen and progesterone levels—which can alter sebum secretion and result in oilier hair.

3. Excessive Stress
Stress and anxiety can trigger overactivity of the sebaceous glands. Today’s fast-paced lifestyle—balancing professional responsibilities with household duties—often leads to chronic stress, which in turn promotes excess sebum production and oily hair.
4. Seborrhea
Oily hair is a manifestation of seborrhea—a condition characterized by excessive sebum secretion due to hyperactivity of the sebaceous glands. Elevated androgen levels are a primary contributor to increased sebum production. Age and sex also influence susceptibility; adolescent males are particularly prone.
5. Overwashing
Many individuals wash their hair frequently due to perceived oiliness. However, excessive shampooing may paradoxically worsen oiliness: stripping natural oils triggers compensatory overproduction of sebum, resulting in even greater oil secretion.

The above outlines the main causes of oily hair. We hope this information proves helpful. Individuals with oily hair should first identify the specific underlying cause(s) so they can implement targeted interventions. Maintaining healthy dietary habits is also essential for managing and improving oily hair.