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We shed lighton common myths
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PHO TO JED MORRISON
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Sunscreens protect
_
you from all harmful
ultraviolet rays,
f a l s e
.
t h e
FAC
A sunscreen’s effectiveness is
currently measured by its sun protection
factor (SPF)—a number that indicates how
long it would take for UVB light to redden
skin versus no protection at all. This SPF
number, however, doesn’t rate any UVA-
shielding bene fits—and UVA waves make
up 95 percent of the earth’s solar radiation.
THE N
e
WS
“Our knowledge of the dangers
associated with UVA rays has grown
significandy over the last decade, and we
now know that UVA plays a significant
role in skin cancer,” says Dr.
Perry
Robins,
president of The Skin Cancer Foundation.
The FDA is now working on a new, easy-
to-learn labeling system to help consumers
understand how well a specific sunscreen
shields against UVA
THE BOTTOM LINE
UVAraysareas
dangerous as UVB and are present year-
round. They penetrate through glass and
clouds, and damage skin without leaving a
telltale burn behind (but will leave fine lines
and wrinkles). Until the FDA puts its new
labels into effect, look for “broad spectrum
protection” and scan the ingredient list for
FDA-approved UVA guards including
titanium dioxide, zinc oxide, avobenzone
(Parsol 1789), Mexoryl SX, and oxybenzone.
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