Oily Hair

Oily hair is caused by excessive sebum production on the scalp. Even freshly washed hair may become oily within a few hours, looking greasy, weak and dull.

Having oily hair is not caused by a lack of hygiene.

In this article, we will discuss the causes of greasy hair and oily scalp, key aspects of hair care and which shampoos help regulate sebum production on the scalp.

Sebaceous gland cells store oil droplets until they reach capacity, then burst and release their contents onto the scalp. Sebum production is essential for the scalp; otherwise, the scalp would become irritated and excessively dry. Sebum is not only crucial for protecting the scalp but also for maintaining hair health. Without sebum, the hair would not be shiny and would not maintain its elasticity. Thus, sebum helps protect both the scalp and hair from moisture loss and environmental factors. Issues arise when sebum production becomes excessive and faster than the scalp can absorb. Typically, hair starts looking greasy in two to three days, but some individuals may experience greasiness within just 24 hours. Increased sebum production is influenced by both internal factors such as hormones and lifestyle and external factors such as climate and environmental conditions.

Heat exposure can dry out the scalp, triggering the body to overproduce sebum, which leads to faster greasiness. This often happens in winter due to heating devices and in summer because of sun exposure and wind.

Excessive and improper hair care may cause excessive stress on the hair. Dyeing, blow-drying, and straightening hair dry out the scalp and as a response, sebum production accelerates to compensate. A poor diet and high-stress levels can worsen oily hair. Additionally, straight hair tends to become oily faster than curly hair since oil spreads more quickly along the strands. Likewise, fine hair looks greasy sooner than thick hair as sebum is spread over a smaller surface area.

Hair Care: It is important to use a gentle and everyday shampoo. Otherwise, the scalp may get dry, leading to a dull and fragile appearance.

Rinsing: Conditioners should be rinsed off thoroughly to prevent buildup on the scalp and the blockage of oil glands. Water hardness also plays a role here. Hair care products rinse off more easily in hard water compared to soft water.

Water Temperature: Regardless of water hardness, the water should always be lukewarm. Excessive heat may trigger sebum production.

Drying: Hair should be air-dried. If using a blow dryer, opt for the cool setting or apply minimal heat.

Combing: To prevent excessive sebum distribution, use a comb instead of a brush. If using a brush, cleanse the brush with shampoo once a week. Sebum, dandruff and styling product residues accumulate on the bristles.

Hair Styling: Oily hair can still be styled but to prevent rapid greasiness, avoid using oil-based products like hair wax, styling creams or hair oils.