With the popularity of northern bathhouses throughout the country, the "little potato" from the south went north to experience the massage service of a large bathhouse, and as a result, their bodies were covered in mud! Why does it rub out "mud"? What are these "mud"? Can we tolerate this kind of rubbing bath? The reporter invited Tang Yaping, the chief physician of the Department of Dermatology Prevention and Treatment at Guangzhou Dermatology Hospital, to clarify his doubts. Taking a bath forcefully may increase the risk of skin diseases. Many northerners like to use a bath towel to rub their bodies hard, until they feel "muddy" before they feel clean. However, in the eyes of dermatologists, excessive force in bathing may increase the risk of skin diseases. Tang Yaping said in an interview with reporters that the "mud" produced by taking a bath is the shedding cells produced by the human body's daily metabolism and the oil secreted by the body. "The sebaceous glands in the human body secrete 150-250 grams of oil per week, forming a thin film on the surface of the skin. This not only protects the body from external damage, but also prevents the loss of nutrients, especially water, in the body." "Rubbing vigorously can cause two types of damage to the body," Tang Yaping explained, which can damage the stratum corneum. The stratum corneum and lipid membrane on the surface of the skin together form the barrier protective layer of the skin, and rubbing vigorously with a bath towel can damage this protective layer. When the stratum corneum is extensively peeled off, the skin barrier structure will weaken, creating favorable conditions for the invasion of bacteria and microorganisms colonizing the skin surface. Once the skin is scratched, there is a risk of infection. Secondly, taking a bath may induce or worsen skin diseases. Rubbing vigorously until the skin turns red can easily cause cracking or itching. If excessively cleaned with soap, shower gel, etc., it can make the skin drier, leading to dry dermatitis. Tang Yaping believes that the skin of the human body is updated about once every 1.5 months, and taking a bath every ten and a half days can indeed produce mud. However, with the improvement of living conditions nowadays, it is important to take frequent showers and showers to clean the skin. If you continue to take frequent showers, not only will dead skin be removed, but also a layer of emulsified film on the surface of the skin will be removed. This not only damages the skin barrier, but also triggers skin itching and other skin diseases. The water temperature for bathing in winter should not be too hot to protect the skin barrier. It is also important to control the water temperature during bathing in winter, generally controlling the water temperature at 37 ℃ -42 ℃. Tang Yaping stated that high or low water temperatures have adverse effects on the body. Low water temperature may irritate the skin, leading to catching a cold. Prolonged exposure to this can easily trigger diseases such as arthritis. If the temperature of the bath water is too high, it can cause capillary dilation, damage the oil on the skin surface, cause or worsen skin dryness, and cause discomfort such as redness, peeling, and itching. "If you can hear a" squeaking "sound when rubbing your skin with your fingers after washing, it indicates that the rubbing and cleaning are excessive." Tang Yaping suggested that in winter, the climate is dry and the humidity is low, so there is no need to take a shower too frequently. In the north, it is advisable for young people to take 2-3 showers per week, while in the elderly, metabolism is slow and oil production is low. It is advisable to take 1-2 showers per week, while in the humid climate of the south, the frequency can be appropriately increased. Tips: Experts remind that when cleaning the skin, attention should be paid to the following points: 1. Use less or no shower gel. Most shower gels belong to chemically synthesized detergents, and if used excessively for a long time, the chemicals in them can be