Dr. So-youn Koo of Dong-An Joonsim Clinic appeared on KBS's live broadcast World Morning to introduce the causes and treatments of dry skin. She said that dry skin is a condition in which moisture is lost from the outermost layer of the skin, the stratum corneum, and although it may look like a single layer of skin at first glance, it is actually made up of dozens of layers and contains about 5-6 times its weight in moisture, playing a very important role in maintaining normal, soft skin. When the moisture in the stratum corneum disappears, the skin cracks just like a field cracks during a midsummer drought, and fine skin peels appear. If it progresses further, severe itching occurs, and about 20% of the elderly suffer from itching due to dry skin, but young people are no exception. In the case of dry skin, you need to know that it is not because the skin is oily, but because it lacks moisture. Therefore, it is most important to maintain an appropriate amount of moisture in the skin and the surrounding environment as much as possible. To this end, he said that bathing habits are important. He said that water that is too hot is not good, lukewarm water, about body temperature, is suitable, and it is better not to use soap at all, but to use weak soap where it is absolutely necessary.