“While widespread use of nanotechnology in medicine is currently under evaluation, one of the main benefits of nanoparticles in sunscreens is that the small molecules can provide more protection and more even coverage on the skin’s surface than larger particles,” said Dr. Siegel. “Considerable research on the use of nanoparticles on healthy, undamaged skin has shown that the stratum corneum – the outermost layer of the skin – is an effective barrier to preventing the entry of nanoparticles into the deeper layers of the skin. Titanium dioxide and zinc oxide have a long history of safe use in sunscreens and offer good options for broad-spectrum UV protection.”

Get vitamin D safely
There has also been concern that sunscreen use prevents the synthesis of vitamin D by the skin. Vitamin D is an essential nutrient that is vital for strong bones and a healthy immune system. The Academy recommends that an adequate amount of vitamin D should be safely obtained from a healthy diet that includes foods naturally rich in vitamin D (e.g., dairy products and fish), foods/beverages fortified with vitamin D (e.g., fortified milk and fortified cereals), and/or vitamin D supplements - and not from UV exposure. The Academy recently updated its position statement on vitamin D based on the published review of the increasing body of scientific literature on this vitamin conducted by the National Academy of Sciences Institute of Medicine (IOM).

“Unprotected UV exposure to the sun or indoor tanning devices is a known risk factor for the development of skin cancer. Since sun exposure is responsible for vitamin D production in the skin, wearing sunscreen can decrease the skin’s production of vitamin D, but alternative and safer options are available to obtain your vitamin D,” states Dr. Siegel. “Individuals who properly and consistently wear sunscreen or use other UV protective measures, and are concerned about their vitamin D, should discuss obtaining sufficient vitamin D from foods and/or vitamin supplements with their doctor.”

FDA sunscreen regulations will be helpful
Last June, the FDA announced new sunscreen regulations which clearly define the testing required to make a broad-spectrum protection claim in a sunscreen and indicate which types of sunscreen can reduce skin cancer risk. “We look forward to the implementation of these regulations which will help Americans reduce their risk for skin cancer by guiding them to the most effective sunscreens and advising them about other sun-protection measures,” said Dr. Siegel.

Sunscreen just one sun protection tool
“Despite any concerns over the use of sunscreen, they are an important component of a daily protection plan, as dermatologists understand that the public may not be willing to wear protective clothing and minimize sun exposure. There are many sunscreen products available that meet the Academy’s recommendations, and consumers need to be comfortable with their choice of product in order to use it routinely,” Dr. Siegel added. “Since allergic and other reactions can occur, individuals should read the product’s labeling carefully, use as directed, and seek the advice of their dermatologist in using sunscreens and any product applied to the skin. The American Academy of Dermatology will continue to monitor scientific evidence related to sunscreen ingredients and their effectiveness to help guide patients and the public.”

Headquartered in Schaumburg, Ill., the American Academy of Dermatology (Academy), founded in 1938, is the largest, most influential, and most representative of all dermatologic associations. With a membership of more than 17,000 physicians worldwide, the Academy is committed to: advancing the diagnosis and medical, surgical and cosmetic treatment of the skin, hair and nails; advocating high standards in clinical practice, education, and research in dermatology; and supporting and enhancing patient care for a lifetime of healthier skin, hair and nails.

###

Source: Academy of Dermatology (AAD)