The patient used the mask first, and then used the essential oil, the facial skin appeared a heavy patch of redness. Facial skin like a light soft moisturizing, essential oils or too thick, easy to stimulate the skin, the patient said the original also used essential oils in this way, this time with the mask and then used on the damage, if this is the case then first consider the mask in the process of external application of the skin surface by the epidermal cells and secretion of oil similar to the brick wall structure is damaged, the original does not do the mask when the skin is more dense, coupled with the essential oils quickly evaporation, the impact on the skin is smaller, after applying the mask epidermis damage, the essential oil is easy to completely not evaporate before causing skin damage.