老生常谈，你的防晒霜用对了吗？

(HealthDay)—Stick or spray-on sunscreens are essential tools against skin cancer, but it's important to use them the right way, a dermatologist says.

皮肤科医生告诉我们，涂防晒霜或喷防晒喷雾在一定程度上有利于预防皮肤癌，但仅知道这一点却是不够的，知道怎么正确使用也是很重要的。

Wattenberg is an associate clinical professor of dermatology at the Icahn School of Medicine at Mount Sinai in New York City. "Sticks are easy for under the eyes and the backs of the hands, while spray sunscreens are often easier to apply on children," Dr. Debra Wattenberg said in an American Academy of Dermatology news release."However, it's important to take precautions when using stick and spray sunscreens to ensure the best protection for you and your family," she added.

黛布拉 · 沃滕伯格博士，是纽约市西奈山医学院皮肤科的临床副教授。她在美国皮肤病学会的新闻发布会上说:"当我们要在眼下或者手背上涂时，用防晒霜棒更好;对儿童来说，防晒喷雾更友好。但不论怎么使用，安全问题不容忽视，你必须采取一定的防护措施，这样你的家人和你才能得到更好的保护。”

As with lotion sunscreens, choose sticks and sprays that are broad-spectrum, water-resistant and have an SPF (sun-protection factor) of 30 or higher, Wattenberg said.

她还说到：“不论是防晒霜棒还是喷雾型的，必须满足防水、广谱防晒，且防晒指数必须达到30及以上。”

When using sticks, apply four passes back and forth on each area of skin to ensure ample protection. Then, rub the sunscreen in so there is an even layer of coverage.

用棒涂时，必须要来来回回涂个四遍，这样才能形成足够的保护，再涂防晒霜，就又可以多加一层覆盖;

When using sprays, hold the nozzle close to the skin and apply generously. A good rule of thumb is to spray until the skin glistens. Rub the spray in thoroughly to ensure there are no uncovered spots and coverage is even, Wattenberg said.

使用喷雾时，将喷嘴贴近皮肤，尽管喷别心疼。那怎么样才算是喷好了呢?一直喷到皮肤有点反光才可以。沃滕伯格说，你需要彻底擦拭喷雾，确保没有发现抹不开的斑点，也不存在没覆盖到的区域。

Never spray sunscreen near your face or mouth and do not inhale it. Spray your hands first and then use them to apply sunscreen to your face.

永远也不要在脸上附近或者嘴边喷防晒喷雾，以免吸到嘴里。你可以先多喷下手，然后再小心地涂抹在脸上。

Don't use spray sunscreen on windy days because it's harder to apply and there's a greater chance of accidentally inhaling it. Never apply a spray sunscreen near heat or an open flame, or while smoking, and make sure it's thoroughly rubbed in and dry before going near open flames.

假如某一天风很大，最好也不要涂抹防晒，因为这种天气本来就不好涂抹，再加上你吸入口里的可能性也更大。此外，也千万不要在接近高温或者明火的地方涂抹防晒霜、喷防晒喷雾，吸烟的时候也涂抹不得，你还必须在接近火焰之前，把防晒霜彻底擦干。

"No matter what type of sunscreen you use, make sure you reapply it every two hours when outdoors or immediately after swimming or sweating," Wattenberg said.

瓦滕伯格说：“最重要的是，无论你涂了啥样的防晒霜，在户外呆了两小时之后，游泳甚至是出汗之后，都必须重新涂一次。”