5 Things You Didn't Know About Sunscreen
Applying sunscreen under the hot sun is crucial, however, a stroll down the sunscreen aisle
can be a stressful experience.
In this video, I'm going to tell you a few things you need to know before you buy sunscreen.
When it comes to sunscreen, do you consider about water-resistant?
how about broad spectrum? or how about SPF 100?
How do you know what's really the best sunscreen for your skin and overall health?
Each year, the Environmental Working Group releases its guide to buying sunscreen.
The EWG is an independent advocacy group focused on public health and environmental issues
based in Washington DC.
So, here are the best things you need to know about sunscreen according to EWG.
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1 - Sunscreen is your last resort
For sun protection, sunscreen should be the last step you take, according to the EWG.
This doesn't mean that sunscreen isn't important; this guideline is not an excuse to skip out
on slathering on the lotion.
But other precautions also play a big role.
For example, your clothes can reduce your risk of a sunburn by 27 percent.
And staying in the shade is important, particularly for infants: Keeping little ones in the shade
can reduce their risk for multiple burns by 30 percent.
The EWG also recommends that people wear sunglasses to protect their eyes from UV rays; plan outings
in early morning or late afternoon, when the sun is lower in the sky; and check the UV
index (a measure of how strong the sun's rays are) before heading out.
2 - SPF: Bigger isn't better
It seems like the sunscreen industry makes products with higher and higher SPFs each
year.
SPF, or sun protection factor, is a measure of how much sun a person wearing a particular
sunscreen can be exposed to without getting a sunburn, compared with how much sun he or
she could be exposed to without any type of protection, according to the Food and Drug
Administration (FDA).
But the FDA has called sunscreens with an SPF of 50 or higher "inherently misleading."
These high-SPF sunscreens provide only slightly better sun protection than lower-SPF sunscreens,
for example, when properly applied, an SPF 50 sunscreen blocks 98 percent of the type
of sunlight that causes reddening and sunburn, called UVB rays, and a SPF 100 sunscreen blocks
99 percent.
But many people think these higher-SPF products mean individuals wearing the sunscreens can
spend more time in the sun, however, this is not the case.
In addition, SPF refers only to protection against UVB rays, which cause the skin to
redden and burn.
A person may think that because his or her skin isn't getting red, there's no damage.
However, damage from UVA rays can still occur, according to the EWG.
3 - Don't depend on cancer prevention
Scientist know that sun exposure causes skin cancer.
So shouldn't sunscreen, which protects skin from sun exposure, prevent cancer or lower
the risk?
In fact, public health groups, including the FDA, the National Cancer Institute and the
International Agency for Research on Cancer, say that data does not support the idea that
sunscreens alone can reduce the rates of all types of skin cancer, according to the EWG.
Instead, studies have shown that people who rely solely on sunscreen to protect their
skin are more likely to get sunburns, which are linked to skin cancer, than those who
also protect themselves in other ways.
But another factor may be that sunburns aren't the only things that can lead to skin cancer.
UVA rays, which don't cause visible damage, can also cause changes that lead to cancer.
Though sunscreens protect against both UVA and UVB rays, these products offer less protection
against UVA rays, meaning that UVA damage can start to happen before visible.
Ideally, sunscreens would protect against both forms of UV rays in similar ways.
In Europe for example, many American products can't be sold, because they don't meet the
stricter European requirements for UVA protection.
4 - Sunscreens protect against sunburn – but not much else
Sunburns are only one of the ways that the sun can damage the skin.
But even if your skin doesn't burn in the sun, it can still be damaged.
For example, UVA rays, which sunscreens often fail to block sufficiently, can penetrate
deeper into the skin and generate free radicals.
These free radicals can react with many molecules in the body, and can damage DNA and speed
up skin aging.
The best ingredient for blocking UVA rays is zinc oxide, which is used in some suncreens.
5 - Watch out for too much vitamin A
Nearly 14 percent of the sunscreens that the EWG reviewed in its 2017 sunscreen guide contain
a type of vitamin A called retinyl palmitate.
The compound is often added to cosmetic products to help fight skin aging.
Several studies in animals have suggested that the compound may increase the risk for
skin cancer.
For example, a 2012 study in hairless mice found that the compound increased risk for
certain tumors, according to the National Toxicology Program.
However, the findings have not been confirmed in humans.
Still, the EWG recommends that people avoid products that contain retinyl palmitate and
notes that the compound isn't used in European sunscreens.
Well, That's The 5 Things You Should Know About Sunscreen.
Really cool information isn't it?
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