Winter bathing time is not strictly defined, you can develop according to your actual situation, generally recommended 3-5 days a bath can be. Too long an interval may lead to improper skin cleaning; too short an interval may damage the skin, causing a large number of normal keratinocytes to fall off, sebaceous film protection, and then indirectly destroy the protective layer of the skin, causing itching, dryness and other uncomfortable symptoms. But because everyone is in the environment, age, skin quality, etc. are different, so you can properly extend or shorten the interval between bathing according to individual needs. 1, environment: due to environmental differences, different regions of the winter climate temperature there are certain differences, and the change in external temperature may affect the body sweat, if sweat is relatively small, you can properly extend the interval between bathing time. But there are some people in the living and working environment need to contact a lot of fumes, dust and other foreign substances, may stimulate the skin, so you can shorten the interval time, 1-2 days to take a bath; 2, age: the general daily exercise of young people is relatively large, sweating more, the interval time between bathing is also relatively short. On the contrary, the elderly sebaceous gland function itself is degraded, the skin stratum corneum is relatively weak, and frequent bathing in winter may cause skin damage, so you can take a bath about 5-7 days; 3, skin type: general winter human sweat glands secrete sweat will be reduced, and the sebaceous glands secrete less oil, especially dry skin type of people, dry skin will be more obvious, so should be properly extended winter bath The interval of time. And oily skin, even in winter, sebaceous glands secretion is relatively dry skin type people, so you can appropriately shorten the interval between bathing; 4, other: for some people suffering from skin diseases, you can follow medical advice to adjust the frequency of bathing, such as patients suffering from eczema, pruritus, etc., you can appropriately extend the interval between bathing, can be washed once a week. At the same time avoid using soap bath, you can use a neutral soap containing oil bath, or only use warm water bath. Apply emollient creams, such as vitamin E milk and compound glycerin anti-itch cream, as soon as possible after bathing to relieve dry skin and reduce itching symptoms. As for psoriasis patients, they can follow medical advice to shorten the interval between baths, such as bathing daily, keeping each bath at 20-40 minutes, and actively treating with medication to help cure the disease. In addition, it is recommended to choose mild toiletries when bathing in winter, and pay attention to keeping warm before and after bathing to avoid catching a cold. After bathing, you can properly apply body lotion and moisturizer for hydration and moisturizing to relieve dry skin to a certain extent. At the same time, we should note that the bath time should not be too long, the water temperature should not be too high, in order to avoid increasing the burden on the heart, the occurrence of cardiac hypoxia ischemia, and after the bath can be changed in the bathroom in advance to avoid the alternation of hot and cold so that vascular contraction, affecting physical health.