Hello, because
Vitamin C in the formula has a high concentration, which
Vitamin C Naturally acidic, the formula has a relatively low pH, creating a saggy feel on the skin. or if the user's skin is sensitive May feel a burning sensation on the skin Recommended study team to reduce the rate of use Or the frequency of use, as well as may use other skin care products together. that can help to strengthen and thicken the skin, for example
Skin Barrier Cream If you do not reduce the rate of use or the frequency of use, the burning sensation is repeated continuously. May stimulate more irritation and reddening of the skin - peeling