What should I do if I have an allergic reaction from using expired skincare products?
After an allergic reaction caused by using expired skincare products, symptoms can generally be managed by immediately discontinuing the product, thoroughly cleansing the skin, applying cold compresses to relieve discomfort, using topical anti-allergy ointments, and taking oral antihistamines. Here is a detailed analysis:

1. Discontinue the product immediately: Once an allergic reaction occurs, stop using the expired skincare product right away. Avoid using other active or functional skincare products as well, to prevent multiple ingredients from accumulating and further irritating the skin, which could worsen the allergic response. This helps create a gentle environment for skin recovery.
2. Thoroughly cleanse the skin: Gently wash the affected area with lukewarm water to remove any residual skincare ingredients. Avoid harsh cleansers containing soap bases, as over-cleansing may damage the skin barrier. After washing, pat the skin dry gently with a clean, soft towel to minimize friction and irritation.
3. Apply cold compresses to relieve discomfort: When the allergic reaction causes redness, swelling, itching, or a burning sensation, apply a cold compress using a clean towel wrapped around an ice pack or a chilled damp cloth. Apply for several minutes at a time to help constrict capillaries, reduce swelling and heat, and alleviate discomfort.
4. Use topical anti-allergy ointments: For mild symptoms such as redness and itching, apply topical anti-allergy creams such as mometasone furoate gel, hydrocortisone butyrate cream, or tacrolimus ointment to the affected area according to instructions. These help suppress inflammation and relieve allergic symptoms. Avoid prolonged or extensive use.
5. Take oral antihistamines: If allergic symptoms are severe—such as widespread rashes, intense itching, or accompanied by mild dizziness or fatigue—take oral antihistamines like loratadine tablets, cetirizine hydrochloride tablets, or ebastine tablets. These help control systemic allergic reactions quickly. Use only as directed by a physician or according to the medication instructions.
During the allergic episode, keep the skin clean and dry, and avoid scratching the affected area to prevent infection. In terms of diet, reduce intake of spicy foods, seafood, and other irritants. If symptoms do not improve after medication, or if serious symptoms such as difficulty breathing or facial swelling occur, seek immediate medical attention.