Protecting Your Skin From the Sun

Approved by the Lineagotica Editorial Board, 08/2017

Listen to the Lineagotica Podcast: Protecting Your Skin From the Sun, adapted from this content.

About UV radiation and skin cancer

Exposure to ultraviolet (UV) radiation is the leading cause of skin cancer. There are two types of UV radiation:

  • Ultraviolet A (UVA).UVA radiation can pass through glass. Research suggests that it may:

    • Cause premature aging and wrinkling of the skin

    • Play a role in causing basal cell carcinoma, squamous cell carcinoma, and melanoma

  • Ultraviolet B (UVB).UVB does not pass through car windows or other types of glass. UVB radiation:

    • Is more closely linked with the development of skin cancer and melanoma

    • Causes sunburn

It is important to protect your skin from both UVA and UVB radiation.

Tips for using sunscreen

Sun damage builds up over time. It is important to use sunscreen every day, even if it is cloudy.

  • Choose a broad-spectrum sunscreen that protects against both UVA and UVB radiation. Make sure it is water resistant and has a sun protection factor (SPF) of 30 or higher. Other types of sunscreen may help prevent sunburn, but they will not protect against skin cancer.

  • Use a lip balm or lipstick that contains sunscreen with an SPF of at least 30.

  • Apply at least 1 ounce of sunscreen 15 to 30 minutes before going outdoors. One ounce is enough sunscreen to fill a shot glass.

  • Reapply sunscreen to your entire body every 2 hours. Reapply every hour if you are swimming or sweating.

  • Sunscreen creams are better for dry skin. Gels are better for the scalp or hairy areas.

  • Wear sunscreen year round whenever you are outside.

  • Do not use sunscreens that have expired.

Other sun protection tips

  • Limit sun exposure. The sun's rays are the most intense between 10:00 AM and 4:00 PM. Practice the shadow rule: if your shadow is shorter than you, you should find shade. Always keep babies younger than 6 months old completely covered and in the shade.

  • Pay attention to the UV index. This numbered scale measures how damaging exposure to the sun will be on any particular day. It is often included in the weather report. When the index is 10 or higher, people should try to stay indoors.

  • Be careful around reflective surfaces. Water, snow, and sand reflect the damaging rays of the sun and increase your risk of getting sunburned.

  • Wear protective clothing and sunglasses. Make sure you have a long-sleeved shirt, long pants, and a hat that shades the face, neck, and ears. Dark clothing with tightly woven fabric blocks more sun than white or loosely woven fabrics. For additional protection, look for clothing made with special sun-protective materials. Make sure your sunglasses have 99% to 100% UV absorption.

  • Be aware of medication side effects. Some medications may make you more sensitive to the sun. These include specific types of antibiotics, anti-inflammatories, antifungals, blood pressure medications, and some types of chemotherapy.

  • Avoid recreational sunbathing. Also, do not use sun lamps, tanning beds, or tanning salons.

Related Resources

Melanoma: Risk Factors and Prevention

10 Tips for Protecting Your Skin from the Sun

Winter Skin Care Tips

I Survived Melanoma and I Want You to Know: Indoor Tanning Is Dangerous

More Information

American Academy of Dermatology: Prevent Skin Cancer

Centers for Disease Control and Prevention: What Can I Do to Reduce My Risk of Skin Cancer?

U.S. Food and Drug Administration: Sunscreen: How to Help Protect Your Skin from the Sun

Skin Cancer Foundation: Prevention Guidelines

U.S. Environmental Protection Agency: Sun Safety