Redness on both sides of the face needs to be treated according to the specific cause, such as rosacea, contact dermatitis, keratosis pilaris, etc. After diagnosis, choose general treatment, medication or physical therapy. 1. Rosacea: Rosacea can cause redness on both sides of the face, and can be treated with benzoyl peroxide, fusidic acid cream, tacrolimus and other medications as prescribed by the doctor, and doxycycline, minocycline, hydroxychloroquine and other medications can be taken orally if necessary. 2. Contact dermatitis: contact with allergic substances, such as cosmetics, skin care products in the composition of the presence of allergies, can also cause redness on both sides of the face, the treatment can be prescribed to take anti-allergic drugs, such as cetirizine, loratadine, and at the same time, the external use of tacrolimus, pimecrolimus and other calcium-modulated neural phosphatase inhibitors, or the external use of glucocorticosteroids such as furoic acid, such as mometasone and other medications. 3. Keratosis pilaris: redness on both sides of the face may belong to keratosis pilaris, which can cause bilateral erythema and follicular papules on the outside of the cheeks. Treatment can follow the doctor’s instructions to use retinoic acid cream, urea cream and other drugs. There are many causes of redness on both sides of the face, it is recommended that the patient go to the hospital in time, under the guidance of the doctor to use the above medication, do not use indiscriminately, so as not to lead to adverse consequences.