What Happened: A new face cream made your skin itchy and irritated.

The Injury: Contact dermatitis. Your skin could be reacting to an ingredient in the product.

The Rx: Wash off the cream immediately with a mild, fragrance-free soap. Apply a 1 percent hydrocortisone cream. You can also use a cool washcloth to soothe inflammation and take an oral antihistamine (like Benadryl) to reduce itching, says Mary P. Lupo, a clinical professor of dermatology at Tulane University, in New Orleans. Pare back on other skin-care products until the irritation subsides. If your skin starts to blister or flake, see your doctor; you may need a prescription for oral steroids or a cortisone shot.

Quick Camouflage: Pick up a mineral-powder foundation to use instead of your regular base. This kind of foundation tends to be gentler and is less likely to irritate.