Those who experience symptoms of cosmetic allergies should stop using the cosmetic immediately and thoroughly wash the area to remove any trace of the irritant. They then should consult a doctor about the best way to treat the allergic reaction.

Over-the-counter creams and ointments that contain hydrocortisone or hydrocortisone acetate may be suggested to help control itching, swelling and general redness. Wet dressings and lotions that soothe, reduce itching (antipruritics) or dry the skin may also be of help.

A physician might prescribe a stronger cortisone ointment. A topical corticosteroid may help reduce inflammation. In severe cases, an oral corticosteroid may be necessary. If blistered skin becomes infected, antibiotics may be necessary.