Sunscreen

The cause and effect relationship between the sun and skin cancer has become clearer over the last couple of decades. Because of this, physicians are stressing the need for appropriate sun protection when outdoors. This includes the use of sunscreens. But, it can be confusing given the variety of brands and types available. Sunscreens are available now as lotions, solutions, creams and sprays. A few guidelines can offer the proper use of sunscreens and offer maximum protection.

Sunscreens are rated by the sun protection factor (SPF). It is the measure of effectiveness in protecting the skin against sunburn. For example, a person who will normally burn after 15 minutes in the sun will burn after 150 minutes (10 times the original length) after applying a sunscreen of SPF 10. We recommend applying a sunscreen with an SPF of at least 15. Also make sure that the sunscreen provides broad spectrum coverage including both UVB and UVA rays. Sunscreens containing physical blockers known as zinc oxide or titanium dioxide are ideal.

One mistake that people often make is how the sunscreen is used. It should be applied at least 30 minutes before going outdoors. This gives time for the sunscreen to dry and equilibrate. Most people also apply too little. Be generous with application, and remember to cover all exposed areas including the tops of the ears, scalp, nose tip, back of the neck and feet.

Also, make sure to repeat application throughout the day. No sunscreen lasts all day, especially if you sweat or are swimming in water. Water resistant sunscreens last only 40 minutes and waterproof sunscreens last only 70 minutes after water exposure. Frequent application will allow the proper and expected SPF protection.

Whether to use a sunscreen that is a lotion, solution or spray is a personal preference. Buy products that feel comfortable and that you will use regularly. Also consider a makeup or moisturizer for daily use that have sunscreen in them. People get tremendous amounts of sun exposure everyday traveling outside when this is accumulated over years. Most patients obtain the majority of sun damage before the age of 21 when they are spending many hours outside and around the pool. So, it is especially important to protect our children with sunscreen. Sunscreen is safe after the age of 6 months.(AAD phamphlet)