The facial spicy feeling after the external mask should be considered with a variety of factors: 1, consider the facial skin itself, the facial skin natural immune function is abnormal, a variety of external stimuli act on the nerve endings, but also activate keratin-forming cells, fibroblasts, the release of a large number of neuromediators and performance for the spicy feeling. 2, the skin barrier function may also be impaired with microbial infection, facial skin in a large number of The facial skin of a large number of follicular mites can aggravate the inflammatory process through natural or acquired immunity, resulting in a decrease in the water content of the stratum corneum of the facial skin, increased transepithelial water loss and lead to facial burning, spicy feeling. 3, consider the factors of the mask, some unqualified mask contains fluorescent agents, heavy metals and glucocorticoids, due to this type of irritating ingredients can lead to normal skin appear spicy feeling.