Photo: Peter Rosa/ Studio D

4 of 5
Problem: Irritation

Because the skin here is so delicate, a number of things—ingredients in some nail polishes or even the nickel in your jewelry—can bring on redness, flaking, or an uncomfortably tight, itchy sensation, says Gohara.

Makeup trick: This kind of skin crankiness is the hardest to cover up, Dubroff says, because dry, irritated skin doesn't hold on to product as well. She's had the best results using a dense concealer with a powdery finish that will really adhere. We like Benefit Boi-ing Airbrush Concealer ($20; BenefitCosmetics.com). Dab it on gently with your fingertips—never rub.

Skincare fix: Over-the-counter cortisone creams can be soothing, but use them sparingly. For everyday, Goldenberg recommends a rich balm with moisturizing humectants like hyaluronic acid and glycerin. An important detail: "Make sure it's fragrance-free," he says. Check out Malin + Goetz Revitalizing Eye Cream ($92; MalinandGoetz.com).