How should summer often have skin allergy?

I just saw some ways to recuperate skin allergies. As for the cause of allergy, I'm not sure. In summer, the weather is hot and the air is humid. Allergic skin should be treated like this: First, diet conditioning: eat more fruits and vegetables and eat less fish, shrimp, beef and mutton; Second, life conditioning: life should be regular and keep enough sleep; Third, keep your skin clean and wash your face often with cold water; Fourth, try to avoid staying in hot air and avoid excessive stimulation of dust and sweat; Fifth, keep the skin absorbing enough moisture to avoid dry skin caused by summer heat; 6. Avoid excessive sun exposure, otherwise it will cause skin burns and allergic phenomena such as erythema, blackening and peeling. * How to care for allergic skin in summer? First, choose sensitive skin care products, such as cold compress film, sensitive cream and cell emulsion cream. To soothe the subcutaneous plexus. Second, avoid using heat-producing skin care products, do not massage the face in a large area (or not), and do not choose scrub. Third, use the same brand of cosmetics and choose cosmetics that do not contain strong fragrance, alcohol and other irritants. Fourth, select special sensitive essence to increase fibrous tissue in skin and improve skin fragility; Fifth, try not to wear makeup or heavy makeup; If skin allergy occurs, stop using any cosmetics immediately, and carry out skin observation and maintenance care.