You can use saline to cleanse your skin, but it can only have a cleansing effect, and saline itself has no anti-allergic effect. Therefore, there is not much improvement for allergy symptoms, but saline has a certain sedative and swelling effect on skin allergy. If the skin allergy is relatively mild, you can use saline wet compresses to moisturize and sedate the skin. If the allergic symptoms are very heavy, it is recommended not to use saline wet compresses, so as not to stimulate again to aggravate the symptoms of local allergies, thus stimulating the possibility of secondary allergies again and delaying the condition.