A Guide to Safe Sunscreen

Applying sunscreen protects your skin from UV damage.

Sunscreen protects your skin from the harmful effects of ultraviolet rays, such as sunburns, suntans, skin cancer, eye problems, premature aging and sunspots. UV radiation can damage your skin in as little as 15 minutes. UV rays can pass through clouds too, so you still need sunscreen on cool and cloudy days. However, not all types of sunscreen work equally well. In addition, proper application is essential; putting on too little sunscreen or not reapplying will leave you susceptible to sunburns. Make sure you know how to apply sunscreen correctly to get the sun protection you need.

Things You'll Need

• Broad-spectrum sunscreen of SPF 30 or higher

Instructions

1. Choose a sunscreen that has broad-spectrum UVA and UVB protection and an SPF of at least 30.

2. Apply about an ounce of sunscreen, or the amount that would fill a shot glass, to all exposed areas of skin 30 minutes before you go outside. Don't forget your ears, feet, hairline and nose. Do not apply sunscreen to your eyes or mouth.

3. Reapply sunscreen at least every two hours, even if the sunscreen is labeled "water-resistant." You may need to reapply sunscreen sooner if you have been swimming or sweating.

Tips & Warnings

• Check the expiration date of sunscreen before using it. Sunscreen without an expiration date is usually good for about three years.

• Wear UV-protective sunglasses and lip balm with SPF to help protect your eyes and lips. Hats and tightly woven clothing will also shield your skin from the sun.

• Consider sunless tanning sprays and lotions if you want a safe tan. A tan from the sun or from a tanning bed is a sign of skin damage.

• Talk to your doctor before applying sunscreen to an infant under 6 months old.

References

• U.S. Food and Drug Administration: Sun Protection
• Centers for Disease Control and Prevention; Skin Cancer Prevention; April 2011