The redness of the pimples on the face may be acne, eczema, contact dermatitis caused by allergy, and so on. It is recommended to pay attention to the care of the skin, and if necessary, give topical medication and oral medication, which can help relieve the symptoms. 1. Acne: Acne, also known as pimples, is considered to be related to long-term poor lifestyle and dietary habits, hormone level disorders and so on. It is recommended to eat a light diet, increase water intake, and use topical medication such as retinoic acid cream and adapalene gel. 2. Eczema: the causes of eczema are complex, considering the immune, genetic, neuroendocrine and other factors related to eczema, is a chronic skin disease. You can use dexamethasone cream, hydrocortisone butyrate cream to apply, if necessary, with oral loratadine, etc., can help relieve itching. 3. Contact dermatitis: Contact dermatitis is an allergic reaction, such as replacing new skin care products, causing skin irritation, resulting in redness and acne on the face. It is recommended to find and get rid of the allergens, oral levocetirizine hydrochloride, loratadine and other drugs to treat. The redness of pimples on the face is considered to be related to the above factors. It is recommended not to scratch the stimulus, good skin care, to avoid infection, if necessary, to the hospital dermatology department, under the guidance of the doctor treatment.