Hydration is paramount, as skin easily dries out during winter and seasonal changes. Applying toner or a moisturizing ampoule within a minute of washing your face is essential to lock in moisture. Avoid products with alcohol or strong surfactants, and opt for products rich in moisturizing ingredients (such as hyaluronic acid, ceramides, and panthenol). Be sure to apply sunscreen during the day, and at night, use a nourishing moisturizing cream or sleeping pack to create a moisture barrier. Using a humidifier to control indoor humidity can also help prevent skin from drying out. Deeply moisturizing with a moisturizing mask once a week is also recommended. Above all, maintaining a healthy lifestyle and maintaining consistent water intake are key.