The reason for the redness of the face after the mask: 1, allergic to a substance contained in the mask, contact with the skin after the increase in subcutaneous capillary permeability caused by redness, face itchy symptoms, immediately wash off the face with tap water residual serum, generally after half an hour or so red symptoms can disappear. 2, facial skin is too dry skin serious water shortage, after the mask of hydration skin base cells absorb a lot of water. The skin can not adapt to the face redness, tingling symptoms. 3, before using the mask did not clean the face, facial cosmetics and mask contains a substance reaction, stimulating the skin and the face redness symptoms. Before using the mask to clean the face cosmetics, with the mask first in the wrist paste 10 minutes without other discomfort and then put on the face, can effectively prevent the appearance of this situation.