Determined to avoid getting a sunburn this Memorial Day? Using a top-rated sunscreen is key, as is applying it 15 to 30 minutes before going outside and reapplying it at least every 2 hours and more often if you're swimming or sweating excessively. But even with the best intentions, there are a few key spots people frequently miss when they're slathering on the sunscreen. For the best sunburn protection, pay special attention to these sensitive and sometimes hard-to-reach places.

Scalp. Apply a lightweight sunscreen along your part to prevent sunscreen-coated hair. Better yet: Wear a hat.

Lips. One study found that 70 percent of beachgoers didn’t shield their lips.

Ears. Even if you’re wearing a hat, be sure to rub sunscreen on your ears, especially the tops.

Neck. The back of your neck gets loads of sun exposure. In addition to sunscreen, a wide-brimmed hat will help shield it.

Back. It’s tough to cover your back if you apply sunscreen yourself. But it’s a common location for basal cell carcinoma and melanoma.

Legs. They’re the most common site for melanoma in women. It’s easy to overlook the backs of your knees.

Feet. You’ll regret it if the tops of your feet get burned—especially when you put your shoes back on.

Editor's Note: This article was adapted from the July 2016 issue of Consumer Reports magazine.