We know that everyone's skin type is different, with the most common being oily, normal, and combination skin. Some people have oily skin, which can appear oily even without using oily cosmetics, while others may feel their skin is dry even after applying oil. This is due to the amount of sebum secretion from each person's sebaceous glands. As we all know, oily skin is the most prone to acne, so why does oily skin tend to have more acne? Let's take a look together.
Reasons why oily skin is prone to acne
Generally speaking, the sebaceous glands in the human body can secrete about 40 grams of sebum per day, with the scalp and face being the main secretion areas. People with oily skin have excessive sebum secretion, making their face appear oily, with a darker complexion, glossy appearance, enlarged pores, and redness on the sides of the nose. The oily surface of the skin makes it easy for hair follicles to become clogged, preventing the normal discharge of sebum secretion from the sebaceous glands and gradually forming acne.
Oily skin is characterized by excessive sebum secretion, darker complexion, enlarged pores, and oily appearance. It can even have an orange peel-like texture. Its pH value is between 5.6 and 6.6. People with oily skin tend to have fewer wrinkles, often have greasy dandruff, and are prone to acne. In Asia, more than 50% of women have combination to oily skin.
Causes of oily skin
External factors: Usually related to climate, work pressure, air quality, and other environmental factors.
Internal factors: Usually related to hormones, genetics, emotions, diet, and other issues within the body. In addition, incorrect skincare methods, such as inadequate makeup removal and facial cleansing, can leave greasy dirt in the pores, allowing bacteria to breed and causing inflammation.
Why does the skin appear particularly oily in summer?
In summer, many people complain that their faces have become an "oil field." Research has found that sweating and temperature play a role in promoting sebum secretion. Changes in temperature can affect sebum secretion, with a 1℃ increase in body temperature resulting in a 10% change in sebum secretion rate.
When exposed to high temperatures for a long time or engaging in intense physical activity in summer, sebum secretion increases. Sweating itself does not change sebum secretion, but it can make the skin appear more oily through light reflection. At the same time, sweating can affect sebum measurement.
Editor's suggestion: People with oily skin can develop a habit of drinking water in the morning. The first glass of water in the morning is important as it not only beautifies and moisturizes the skin, but also stimulates intestinal peristalsis, helps with bowel movements, cleanses the intestines of waste, and eliminates toxins from the body. In fact, whether you have oily or dry skin, it ultimately comes down to a lack of hydration. Therefore, replenishing enough water daily is crucial for the health of our skin.
