If the redness is flushed with burning and itching, it is considered to be an irritant dermatitis of the facial area, which is related to intolerance caused by contact with certain skin care products and cosmetics. If the redness on the face is caused by the expansion and thickening of capillaries on the face, it is considered that the skin is severely damaged in the stratum corneum and the barrier function is lost after long-term use of certain physical treatments, so that the local skin is in a flushed state. Increased temperature and emotional excitement can also lead to physiological facial redness, do not worry, it will recover on its own with time.