The 12 Myths of Sunscreens
Sunscreens Best Friend or Worst Enemy ?
Myths and Facts Your Mother Never Told You
Myth #1 Since Sunscreens Protect Me from UVRadiation, I Can Spend More Time in the Sun
Fact #1 False
According to the Environmental Protection Agency (EPA), using a sunscreen was not designed to extend the time you can spend in the sun. Rather, a sunscreen was designed to offer greater protection against the sun's harmful UVrays while you must be in the sun. [1]
By definition, a sunscreen is rated by the EPA for its ability to screen the sun's UVB rays ONLY. It does not screen the sun's deadliest form of UVradiation, the sun's UVA ray. [1]
A review of Table 1 shows the only FDAapproved ingredient that can completely screen the sun's UVA and UVB rays is Zinc Oxide. In its pure state, Zinc Oxide is an opaque, white cream paste usually seen on professional baseball players; it is not readily absorbed into the skin like other sunscreens. [1]
Table 1 Amount of UV Sun Ray Protection vs Ingredient [1]
Don't dismiss Zinc Oxide as a sunscreen ingredient because you think it is just white gunk and will make you look like the Pillsbury Doughboy. With today's technology, it is incorporated into lotions that are easily applied, more transparent without losing their ability to block both of the sun's UVA and UVB rays, have pleasant textures and fragrances, and do a great job at protecting you. [1]
Before buying a sunscreen, make sure it contains Zinc Oxide as the active ingredient. Visit the nonprofit website www.ewg.org/2010sunscreen to ensure it has a minimum of 20% Zinc Oxide. If your sunscreen does not contain at least 20% Zinc Oxide, toss it and get a sunscreen that does. Your life may depend on it ! [2]
To demystify the protection that sunscreens offer, per the EPA: "There is there is no evidence that sunscreens protect you from malignant melanomas, or several other types of skin cancer as well. To fully protect yourself, remember to seek shade, minimize peak hours of sun exposure, and wear protective clothing in addition to applying sunscreen." [1]
A sunscreen should be used especially when the UV Index is high (UV Index = 5 or higher). Although a sunscreen with an SPF of 15 or higher offers some protection from sunburn, it does not block all of the sun's damaging rays. [1]
Figure 1 Penetration of UVRadiation Without Sunscreen [1]
If a sunscreen WITHOUT Zinc Oxide had been applied in Figure 1, the UVA ray would have penetrated as deeply as shown; and the UVB ray would have been screened and would have not penetrated into the skin.
If a sunscreen WITH Zinc Oxide had been applied in Figure 1, both the UVA ray and the UVB ray would have been screened and would have not penetrated into the skin.
Myth #2 A "BroadSpectrum" Sunscreen will Block both
UVA and UVB Sun Rays
Fact #2 True and False
The term "broadspectrum" means the sunscreen will protect you from both the sun's UVA and UVB rays. [1]
This statement is True for one and only one type of sunscreen; the type that contains a minimum of 20% Zinc Oxide as its active ingredient. [1] [2]
This statement is False if you use any sunscreen with less than 20% Zinc Oxide as its active ingredient. [1] [2]
The sun (and tanning bed/booth) emits 95% of its UVradiation as UVA rays. The remaining 5% are emitted as UVB rays. [3]
According to the EPA, the sun's UVA rays can easily penetrate most sunscreens and cause malignant melanomas, the deadliest form of skin cancer. There is only limited evidence that sunscreens protect you from several other types of skin cancers. [1]
Again, by definition, a sunscreen is rated by the EPA for its ability to screen the sun's UVB rays ONLY. It does not screen the sun's deadliest form of UVradiation, the sun's UVA ray. [1]
Ironic, isn't it? The EPA worries about protecting you from the sun's UVB ray, yet it is the sun's UVA ray that is 20 times stronger and is much, much deadlier (the leading cause of malignant melanoma). [1] [3]
Myth #3 When You Double the Sunscreen's SPF, You Double the Time You Can Spend in the Sun
Fact #3 False
The abbreviation "SPF" is one of the most misunderstood and misused terms in the world.
Per the FDA's definition of SPF: [4]
A SPF 30 means that just 1/30th of the sun's UVradiation can reach your skin. [5]
UVA rays do not redden the skin; only UVB rays redden the skin. This is true for the sun and tanning beds/booths. [5]
According to the FDA's own definition, when you double a sunscreen's SPF rating, you double the time it takes for Skin Type 3 to redden. In other words, when you double a sunscreen's SPF rating, you double the protection from the sun's UVB rays only. It's that simple, and that complex. [1]
Contrasting the FDA's first definition to the FDA's second definition, we have a conundrum.
Again, according to the FDA, SPF is not directly related to time of solar exposure, but to amount of solar exposure. Although solar energy amount is related to solar exposure time, there are other factors that impact the amount of solar energy; for instance, the intensity of the solar energy. [4]
The solar intensity is related to:
- Time of Day: One hour of sun exposure at 9:00 AM may equal 15 minutes at 1:00 PM. [4]
- Geographic Location: solar intensity increases as you move toward the equator.[4]
- Elevation: the higher the elevation, the higher the solar intensity. [4]
- Cloud Cover: the more the clouds in the sky, the lower the solar intensity for UVB rays (clouds have no effect on UVA rays). [4]
In addition to solar intensity, there are a number of other factors that influence the amount of solar energy that a consumer is exposed to: Skin Type, Amount of Sunscreen Applied, Reapplication Frequency, Perspiration Rate (which is a function of humidity), Water Activities, Clothing Fabric Type, etc. [4]
People with Skin Type 1 and 2 SHOULD NEVER go out into the sun or into a tanning bed for purposes of sunbathing.
Visit Determine Your Skin Type to determine your skin type. The lighter a person's skin, the higher the level of UVradiation absorption. However, people with darker skin should use sunscreen protection too. [4]
Because of the various factors that impact the amount of solar radiation, SPF does not inform you of the time you can spend in the sun. In other words, SPF simply allows consumers to compare one sunscreen protection against another; the consumer knows that a SPF 30 protects more than a SPF 8, but that's it. [4]
Therefore, a sunscreen with a SPF=30 IS NOT twice the sun protection of a SPF=15 ! [4]
Myth #4 I will Apply an AllDay Sunscreen, and it will last me All Day
Fact #4 False
There is no such thing as an "AllDay Sunscreen." Sunscreens become transparent once applied to your skin. The sunscreen's ingredients break down at a faster rate once exposed to sunlight, and under a high UVIndex, some of the sun's rays penetrate through to your skin within minutes. In order for the sunscreen to be more effective, you'll have to consistently reapply any sunscreen at least every two hours while in the sunlight (but apply it in the shade);. [1]
Even "waterresistant" sunscreens will wash off if engaged in water activities, perspiring, type of clothing fabric worn, etc. (The FDA banned the term "waterproof" from suntan lotion.) Reapply sunscreen often. [1]
Myth #5 I Will Apply My Sunscreen at the Beach or Pool
Fact #5 False
Apply your sunscreen at least 20 minutes before going out into the sun. This gives the sunscreen time to absorb into your skin.
If you apply your sunscreen in the sun, it will evaporate under the sun's rays before it has time to absorb into your skin. Do not forget about lips, ears, feet, hands, bald spots, and the back of the neck. In addition, apply sunscreen to areas under bathing suit straps, necklaces, bracelets, and sunglasses. Keep sunscreen until the expiration date or for no more than 3 years, because the sunscreen ingredients become less effective over time. [1]
Remember to allow your sunscreen to PENETRATE before it EVAPORATES.
Myth #6 I Will Get a Tanning Bed Tan First Since They Are Safer Than The Sun
Fact #6 False
According to the EPA, FDA, American Cancer Society, etc, etc, "There is no such thing as a safe tan!" [1]
For the real facts about the dangers of sun tanning, visit: www.skincancer.orgSkinCancer. They encourage people who want a sun tan to stay out of the sun and use a sunless tanning lotion. [1] [2]
Being informed about how to protect yourself from unwanted sun or tanning bed exposure is the best defense against skin cancer and premature skin photoaging. [1] [4] [5] [6]
A suntan, whether you get it on the beach, in a tanning bed, or thorough incidental exposure, is bad news for your skin. Suntans are caused by harmful UVradiation (UVA and UVB) from the sun or tanning bed, and if you have a suntan, you've sustained irreparable skin cell damage. [4] [6]
No matter what you may hear at tanning salons or from your friends (or you just plane want to believe otherwise), the cumulative damage caused by UVradiation leads to premature skin aging (wrinkles, lax skin, brown spots, and more), as well as skin cancer. [1]
It is irrefutable that those who use tanning beds (UVA and UVB) are 74% more likely to develop melanoma skin cancer than those who have never used tanning beds. The more time you spend bed tanning, the higher the odds of developing a skin disease (including malignant melanoma). [6] [7]
According to the American Cancer Society, the type of tanning machine used affects melanoma risk; some tanners were 4.44 times as likely as nontanners to develop malignant melanoma. Remember, the higher the bulb strength, the deeper the UVA can penetrate into your skin, and the worse the skin cell damage. [8]
The American Cancer Society is currently trying to force the FDA to enact a law called: "It's Time to Ban the Tan." They want the FDA to ban all tanning beds, booths, and all artificial UVradiation emitting devices. However, tanning beds, booths, etc are all classified as medical devices since they are still used for medical reasons. [3] [9]
Powerful UVtanning units may be 10 to 15 times stronger than the midday sunlight on the Mediterranean Sea. Approximately 95% of the rays emitted from tanning units are UVA radiation (same UVA/UVB ratio as the sun, but much stronger). Recent research is showing that UVA is far more dangerous, because it penetrates the skin deeper (see Figure 1 Penetration of UV Into the Skin). UVA is known to cause skin photoaging and skin cancer. [10]
Modern "clamtype" tanning beds and canopies are not only dangerous since they deliver 12 times stronger UVA rays than the midday sunlight, but they bombard your body from all sides at once. The sun can only bombard your body from one side. Bombarding your body from all sides with super highstrength UVradiation is a recipe for not only a shortened lifespan, but also an ugly, shriveled corpse lying inside a coffin (of course, morticians are great cosmetologists!). [5]
Tanning bed salons claim tanning machines are safer than sun tanning for two reasons:
1) they use a more "controlled" ratio of UVA to UVB radiation;
2) they offer more "controlled" UVradiation exposure.
However, we know now that UVA radiation is a carcinogen (causes cancer), and studies have revealed that tanning salons frequently exceed "safe" UVA radiation limits. Study after study has shown that sun bed tanning increases the risk of both melanoma and nonmelanoma skin cancers. [11]
Some tanning salons boast their higher strength bulbs which means less time in the tanning bed/booth, thereby reducing the risks of skin cancer. But this is not true for two reasons:
1) the higher the bulb strength, the deeper the UVA rays penetrate your skin, and the worse the skin cell's DNA damage;
2) the accumulative amount of UVradiation energy absorbed by the skin cells' DNA is the same.
A lower radiation over a longer time or a higher radiation over a shorter time provide the same total amount of radiation; and it is the accumulative UVradiation energy, as well as the bulb power, that are your enemies! Note too, higher bulb strength means a higher price and higher customer turnover, which means higher profits! [12] [13]
There can be as much as a 75% increase in melanoma risk for people who have used sun beds on a regular basis between ages 12 30. The UVrays damage the DNA of the skin's epidermal cells, triggering enzymes that race to repair the damage. However, these enzymes do not always repair the DNA successfully, and all this unrepaired damage can lead to mutations that increase the risk of skin cancer. Also, repeated unprotected UVlight exposure can cause skin photoaging wrinkles, sagging skin, and spots associated with sun damage. [1]
[13]
When UVradiation penetrates your skin, damage can be done to a single strand of DNA. The rays can cause the strands to break or cause crosslinking to the wrong area of the strand. This is now a mutation that your body tries to repair with special proteins. If more damage is caused than your body can repair, the result can be cancer. Different people have different abilities to repair UVdamage. [13]
When you tan from the sun or tanning bed, it is your body's attempt to protect itself from additional UVradiation. Remember, a tan from the sun/tanning bed is generated by damaging "live" skin cells. [14]
UVradiation can damage the eyes as well, including cataracts, macular degeneration, photokeratitis, inflammation of the cornea and the iris, pterygium, and squamous cell cancer of the conjunctiva. [15]
When you go out into the sun, remember that sunglasses are just as important as sunscreen. [15]
A sunburn and a suntan are equally dangerous because both result from DNA damage to the skin cells. It is true that sunburn has been directly linked to malignant melanoma one blistering sunburn in your childhood or adolescence, or five sunburns total over the course of your life, more than doubles your chances of developing malignant melanoma later in life. [13]
A history of sunburns doubles your risk of melanoma. [13]
Your risk of basal cell carcinoma is strongly related to sunburns, especially in childhood. [13]
Your risk of squamous cell carcinoma is strongly related to longterm occupational exposure to sunlight. [13]
Your risk of melanoma (the deadliest form of skin cancer) is most strongly linked to intermittent, shortterm exposure to highintensity sunlight, often resulting in sunburn. [13]
Myth #7 I Will Get a Sunless Tan First; My Darker Skin Will Protect Me From The Sun
Fact #7 False
Sunless tanning lotions only tan your "dead" skin cells. The sun's UVA and UVB rays penetrate through this layer of "dead" skin cells, and into your "live" skin cells. A tan from a sunless tanning lotion cannot protect you from the sun's UVrays. For protection, you must use a sunscreen with a minimum of least 20% Zinc Oxide. [17]
IF you go under the tanning bed or booth, whatever you do, DO NOT USE a Tanning Acceleration. Placing these chemicals onto your body not only intensifies the damage to your skin cells' DNA, but they also break down to make toxic chemicals that themselves cause skin cancer. Tanning Accelerators are not FDAapproved, and SHOULD NOT BE USED under any circumstance! [18]
Of course, if you go under the tanning bed or booth, you are going against the advice of the Environmental Protection Agency, Occupational Safety Health Act, Food and Drug Administration, World Health Organization, American Cancer Society, and millions of healthcare professionals. [1] [3] [4] ..... [17]
Myth #8 The Sun's Rays Cannot Harm Me Early in the Morning or Late in the Day
Fact #8 False
UVA sun rays strike the Earth everywhere sunlight is visible. UVA sun rays are more deadly that the sun's UVB rays since they penetrate deeper into your skin, causing skin cell mutations (cancer). UVA rays penetrate the Earth's Exosphere, Thermosphere, Mesosphere, Stratosphere, and Troposphere without any problem. When you are out in the sun, or even behind a glass window at home or work, irrespective of the time of day, if you can see the sun, you are being bombarded by UVA rays. Yes, the sun's rays can harm you any time of day.
[1] [14]
Myth #9 If a Sunscreen is on a Store Shelf or on the Internet, It is Probably Safe
Fact #9 False
Health Research Organizations have found that not only do many sunscreens fail to protect against UVradiation, but they also break down over normal usage and develop toxic components which themselves cause skin cancer. [1]
An independent study conducted by Rutgers University, found the following on mice:
- Dermabase increased the total number of cancerous tumors by 69%.
- Dermovan increased the total number of cancerous tumors by 95%.
- Eucerin increased the total number of cancerous tumors by 24%.
- Vanicream increased the total number of cancerous tumors by 58%. [19]
Myth #10 All Sunscreens are Alike, So I'll Buy the Cheapest
Fact #10 False
To find the best sunscreens on the market (and there are hundreds of them), visit Environmental Working Group's website (shown below we do not profit from this website). They state:
[2]
"The best sunscreen is a hat and a shirt. No chemicals to absorb through the skin, no questions about whether they work. But when you can't get away from exposing your skin to the sun, use EWG's toprated sunscreens to provide "broadspectrum" (UVA and UVB protection) with fewer hazardous chemicals that penetrate the skin." [2]
Visit them at: www.ewg.org2010sunscreen/bestbeachsportsunscreens.
A typical page of their sunscreen analysis is shown below. Note that the active ingredient is Zinc Oxide, which is the only FDAapproved sunscreen ingredient that will screen both the sun's UVA and UVB rays effectively.
Myth #11 The More Sunscreen I Use, the Safer I Am in the Sun
Fact #11 False
The longer sunscreen chemicals are left on your skin, the greater the absorption into your body. And the greater the absorption into your body, the greater increase of cancers by virtue of UVradiation breaking down the sunscreen chemicals, generating free radicals. [20]
In other words, the rate of skin cancers MAY NOT be increasing due to increased exposure to the sun's UVradiation, but to the toxic effects of sunscreens that are turned carcinogenic by the sun's UVradiation itself ! [20]
These broken down chemicals are similar to those used to develop free radicals in manufacturing industrial chemicals. Sunscreen chemicals also have strong estrogenic actions that may cause serious problems in sexual development and adult sexual function. [20]
Myth #12 The Ozone Layer Above the Earth is Thinning, and Will Cause More Skin Cancers
Fact #12 False
Actually, it is not the increase in UVradiation that is causing the increase in skin cancers, but the use and overuse of sunscreens. [20]
The results of a test performed on ozone depletion and its cause on skin cancer were studied by British Journal of Cancer and the Norwegian Cancer Institute found that the yearly incidence of malignant melanoma in Norway had increased by 350% for men and by 440% for women during the period 1957 to 1984. They also determined that there had been no change in the ozone layer over this period of time. [20]
The researchers concluded: "Ozone depletion was not the cause of the increase in skin cancers; rather, it was the increase in sunscreens with toxic ingredients that contributed to the increase in skin cancers." [20]
References
[1] http://www.epa.gov/sunwise/doc/sunscreen.pdf
[2] http://www.ewg.org/2010sunscreen/bestbeachsportsunscreens/
[3] http://www.fda.gov/downloads/AdvisoryCommittees/CommitteesMeetingMaterials/MedicalDevices/ MedicalDevicesAdvisoryCommittee/GeneralandPlasticSurgeryDevicesPanel/UCM205687.pdf
[4] http://www.fda.gov/AboutFDA/CentersOffices/CDER/ucm106351.htm
[5] http://www.skincancer.org/understandinguvaanduvb.html
[6] http://www.skincancer.org/indoortanningincreasesmelanomariskby74percent.html
[7] http://www.skincancer.org/tanningbedtax.html
[8] http://www.skincancer.org/Tanning/
[9] http://www.cancer.org/AboutUs/DrLensBlog/post/2010/03/25/ ShouldWeBanTanningBedsTheFDAIsListening.aspx
[10]
http://www.skincancer.org/carcinogenictohumans.html
[11]
http://www.skincancer.org/images/stories/2010_Journal/IntlAdvisoryCouncilNews.pdf
[12] http://www.epa.gov/radiation/docs/federal/frc_rpt3.pdf
[13] http://www.skincancer.org/thedangersoftanning.html
[14] http://www.cancer.ie/sunsmart/tanning.php
[15] http://www.nlm.nih.gov/medlineplus/news/fullstory_102431.html
[16] http://www.skincancer.org/SkinCancerFacts/
[17] http://www.sunprotection.net/sunlesstanning.html
[18] http://www.fda.gov/ForConsumers/ByAudience/ForWomen/FreePublications/ucm126246.htm
[19] http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2630214/
[20] http://www.skinbiology.com/toxicsunscreens.html
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Be aware of your selftanning product; ensure it contains only natural and safe ingredients. Not all sunless tanning products are safe and effective! For best results, use a "gradual" sunless tanning lotion.
You can have a beautiful safe tan! By using TanSome Premium Sunless Tanning Lotion, and avoiding the direct exposure of the Sun. If you do venture outside, correctly use sunscreen#46; You can tan beautifully without the risks of skin damage and skin cancer using our "gradual" sunless tanning lotion!
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