Zhang Wenhe, Deputy Chief Physician of Dermatology, Third Medical Center, General Hospital of Chinese People's Liberation Army. Good at diagnosis and treatment of children's dermatosis.

"Problem skin" means that the skin is in a sub-health state or a skin disease state. Common skin problems include eczema, hormone-dependent dermatitis, rosacea, acne, seborrheic dermatitis, chloasma, oily skin, dry skin and sensitive skin. These "problem skin" may aggravate skin "problems" if ordinary cosmetics are used, and drugs containing hormones may be effective temporarily, but long-term use will lead to hormone-dependent dermatitis. Therefore, the best choice for "problem skin" is to use medical skin care products and treat them with drugs when necessary.