Examining the Causes of Scalp Odor ✔

1. Excessive secretion of sebum

 

The primary cause of scalp odor is excessive sebum secretion. Sebum is a substance secreted by the sebaceous glands that prevents the skin's surface from drying out. The scalp secretes about twice as much sebum as the face, and sebum production becomes even more active when body temperature rises, such as during the summer or immediately after exercise. At this time, sweat and waste products tangled in the hair mix with the sebum and oxidize, which can cause the scalp odor to become more severe.

 

2. When sweating profusely from the crown of the head

 

Excessive sweating is one of the reasons why scalp odor worsens. When large amounts of sweat are produced due to factors such as exercise or temperature changes, the sweat remains on the scalp. As this sweat lingers and mixes with bacteria on the scalp, it causes an odor. The smell can become even more severe, especially if sweat accumulates without being washed off after exercise or activity. Furthermore, the odor tends to be more intense if hyperhidrosis—a condition characterized by excessive sweating due to heat exceeding what is needed to regulate body temperature—occurs.

 

3. Excessive exposure to ultraviolet rays

 

Excessive exposure of the scalp to strong ultraviolet rays is also one of the causes that worsen crown odor. Prolonged exposure to UV rays dries out the scalp and expands pores, weakening hair roots and reducing hair elasticity. Consequently, the dry scalp produces excessive sebum to compensate for the lack of moisture, which can further exacerbate crown odor.

 

4. Bad hair washing habits

 

Improper hair washing habits can also be a cause of scalp odor. If you wash your hair with shampoo or styling products but do not rinse it thoroughly, residue may remain and irritate the scalp, which can worsen scalp odor due to bacterial proliferation. If you do not dry your hair completely after washing, bacteria can multiply in the moisture and cause odors. In particular, you should be careful as sleeping with an undried scalp can lead to bacteria growing on pillows and bedding, potentially causing scalp-related conditions.

 

5. Incorrect hair drying habits

 

Women often have a habit of covering their entire hair with a towel after washing it, but this dampens the scalp, increasing the likelihood of harmful substances such as fungi growing. Since it takes a long time to restore the scalp to its original state once this happens, it is important to recognize this bad habit in advance and prevent it. Additionally, it is important to maintain a healthy scalp and hair by using appropriate shampoos for scalp odor and proper hair drying methods.