Patients with allergies after using skin care products are more common clinically and may heal themselves. It is necessary to judge the degree of allergy according to clinical performance and then determine whether it can heal itself: 1. Patients just need to remove the allergic factors, stop using skin care products that may cause allergy, avoid local scratching and stimulation, do not scald with hot water, and avoid eating fish, shrimp, seafood, beef and mutton, wine and other irritating foods, the allergy may naturally improve after 7-10 days; 2. longer, and even skin infection or ulceration. Patients should actively go to the dermatology department of the hospital and give regular anti-allergy treatment, such as applying pimecrolimus ointment or tacrolimus ointment, or applying anti-inflammatory and anti-itch creams including Eudragit cream and Denide cream, etc. After the manifestation of allergy, pay attention to local hygiene, try to keep it clean and dry, and stop using related skin care products. Patients are advised to always test skin care products on the flexed side of the wrist or behind the earlobe before using them in daily life. When observation for 48-72 hours shows no abnormal reactions before using with confidence, if there are red spots and blister-like reactions, they should not be used.