Pinnacle Dermatology PLLC
August 2010 
In This Issue...
What type of sunscreen to use?
What does SPF on sunscreen tell?
How much protection is SPF 30, etc?
            Personal Attention Exceptional Results.
 

 
Dr. DeEtta Gray, MD, FRCPC
 
 
Welcome. The sun has finally arrived in Seattle so I wanted to take a moment to share some tips for how to have fun in the sun and still decrease your risk of skin cancer and pre-mature aging.
 
The sun produces two types of rays that can damage your skin. Ultraviolet-A radiation (UVA) is primarily responsible for premature aging, wrinkles, and tanning, whereas ultraviolet-B (UVB) radiation can cause burning. Both types can severely damage the skin, resulting in skin cancer. 
 
Every time you tan, you damage your skin and this damage accumulates over time. This accumulated damage, accelerates the aging process by causing wrinkles, age spots and even skin cancer.  The good news is that sun exposure is the most preventable risk factor for all of these, including melanoma.
 
Below are questions that my patients frequently ask me so I thought I would share them with everyone so that we can all be smart about the sun.
 
 
 
AUGUST SPECIAL OFFERS:

Remove age spots with 50% of your first laser treatment
 
Reduce wrinkles with $50 off your next Botox treatment
 
Free Elta Clear sunscreen with purchase of any skin care package over $150.00
Pinnacle Dermatology
1515 116th Ave NE Suite 307
Bellevue, Washington 98004
425-999-2628
8:00AM-5:00PM
 
 
 Q: What type of sunscreen should I use?
 
A:  Ideally, sunscreens should be water-resistant, so they cannot be easily removed by sweating or swimming, and should have an SPF of 30 or higher that provides broad-spectrum coverage against both UVA and UVB light. 
 
 
 Q: Does the SPF tell how well a sunscreen protects against UVA or UVB rays?

A. The SPF number on sunscreens only reflects the screening ability for UVB rays. At present, there is no FDA-approved rating system that identifies UVA protection. 
 
 Q: Does SPF 30 has twice as much sun protection as SPF 15?

A. UVB protection does not actually increase proportionately with a designated SPF number. For example, an SPF of 30 screens 97 percent of UVB rays, whereas an SPF of 15 screens 93 percent of UVB rays, and an SPF of 2 screens 50 percent of UVB rays. 
 
 Q: How much sunscreen should be used, and how often should it be applied?

A. Sunscreens should be applied to dry skin 15 to 30 minutes BEFORE going outdoors. When using sunscreen, be sure to apply it to all exposed areas.  Coat the skin liberally and rub it in thoroughly - most people apply only 25 to 50 percent of the recommended amount of sunscreen. 
 
Helpful Tip:
 
UVA Sunscreen Ingredients to look for:
Avobenzone
Mexoryl
Titanium dioxide
Zinc oxide