According to recent studies, you might be getting less
than half the sunburn protection shown on sunscreen labels
when you’re out on the dive boat.
Consumer Reports tested 19 sunscreens and found that
some provide minimal protection against ultraviolet A
(UVA) radiation, which can cause skin cancer and wrinkles. However, UVA is not considered in the sun-protection factor
(SPF) number listed on sunscreen products. That number
refers to protection against UVB radiation, a different
wavelength that can also cause skin cancer and sunburns.
Consumer Reports’ top choice was Neutrogena Ultra Sheer
Dry-Touch sunscreen with an SPF 45; it is water-resistant
and tested “excellent,” scoring 86 out of 100 for protecting
against both UVA and UVB. Runner-ups were Hawaiian
Tropic’s Ozone Sport Grip SPF 30+ and 15 Plus All Day
Waterproof, both waterproof and scoring 84 and 83 respectively. Forget
Bull Frog, found in many dive shops -- it
scored only 45, tied for 15th out of the 19. The Bull Frog
Quik Gel Sport Spray SPF 36 scored “excellent” for UVB
protection bit only “fair” for UVA protection.
The nonprofit Environmental Working Group (EWG)
investigated 786 name-brand sunscreens and found that one
of every eight high-SPF sunscreens don’t protect from UVA
radiation. Its top-ranked choice was UV Natural Sport SPF
30+. Bull Frog scored better in this study – its 13 products
all scored 7 out of 10. However, Avon Skin-So-Soft Bug
Guard Plus SPF 30, a diver’s favorite, only scored 2.
The EWG says that only 17 percent of sunscreens on
the market are both safe and effective in blocking UVA and
UVB radiation. Only twelve percent of sunscreens with SPF
30 or higher protect from sunburn, while the rest break
down quickly in the sun. Worse, half the sunscreens on the
market have claims that are considered “unacceptable” or
misleading under the FDA’s sunscreen safety standards.
In the meantime, choose a sunscreen with maximum
protection against both UVA and UVB rays, preferably one
labeled very water resistant or waterproof, and featuring an
SPF of at least 30. And be sure to use enough. To get the
labeled protection when wearing a swimsuit, you’ll need to
use two to three tablespoons of sunscreen. Reapply it every
two hours, as well as after every dive or snorkel