The popular germicidal soap is not suitable for winter use, it will destroy the protective fat film on the skin surface to keep the skin moisturized. When the weather is cold, the air humidity is greatly reduced, and the water is more likely to lose. The point of this passage is. ['Germicidal soap will damage the skin surface.', 'Water is easy to lose in cold weather.', 'Germicidal soap is popular.', 'germicidal soap is not suitable for winter use.']