http://www.care2.com/greenliving/safety-concerns-with-sunscreens.html
Safety Concerns with Sunscreens
By Annie B. Bond, Care2 Green Living Executive Producer
Six frequently used UVA and UVB sunscreens were tested by the Institute of Pharmacology and Toxicology at the University of Zurch, Switzerland, for estrogenicity, and reported in “Environmental Health Perspectives,” Feb. 28, 2001.
Chemicals that are estrogenic can be considered endocrine disrupters, fooling the body into believing they were natural hormones, which can cause reproductive problems. The chemicals analyzed were
1. Benzophenone-3 (Bp-3)
2. Homosalate (HMS)
3. 4-methyl-benzylidene camphor (4-MBC)
4. Octyl-methoxycinnamate (OMC)
5. Octyl-dimethyl-PABA (OD-PABA)
6. Parabens
7. Butyl-methoxydibenzoylmethane (B-MDM)
The first six of these chemicals, found in sunscreens of every type, were found to be estrogenic, whereas the seventh was inactive. The researchers concluded that there was enough evidence of estrogenicity for further studies to be warranted.
Abiding by the Precautionary Principle, it makes sense to choose products free of these chemicals until more research has been completed into possible long-term effects in humans and wildlife.
Chemical-free and natural sunscreens use titanium dioxide and zinc oxide. They are physical barrier-type sunscreens and generally less irritating. Zinc oxide and titanium dioxide protect against UVA and UVB rays.
Brands using these natural sunscreens include Aubrey Organics’ Ultra Natural Herbal Sunblock, Titania SPF 25 Full Spectrum Sunblock, and Green Tea Sunblock (ingredients in green tea have been shown to protect against skin cancer); and Logona Kosmetik’s Sun Milk line of mineral sun protection products. Read labels carefully.
Important Note: Until recently, sunscreens have protected only against UVB rays, not UVA rays. UVB rays cause sunburn, and if you screen them you might stay in the sun longer, overexposing yourself unprotected to UVA rays. UV rays are the most intense from 10 A.M. to 2 P.M. We need to wear sunblock effective against UVA and UVB rays, with an SPF of at least 15, year-round. As noted above, zinc oxide and titanium dioxide protect against UVA and UVB rays.
In the news: Swimmers’ sunscreen kills coral
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add your comment »Miessence Certified Organics also has new sunscreen available! Great product! For your safety and others, read the labels on products.
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Annie,
1. Why do you warn us against UV-a? I was always told that this makes your skin a little brown without danger, a normal natural reaction against UV-rays. And it also helps to make vitamine D in our bodies, especially if we do not eat much meat. UV-b are the dangerous ones that can detroy skin-cells or cause skin-cancer. This is what I have always been told.
2. This may be a very disturbing idea to some people. Please, it is not at all my idea to hurt you in one way or another.
But this is my idea: maybe our "habit" (at least since the 60's) to go on vacation and return with a browner skin, may be so unnatural that it is a threat to our health, something we should not do at all (the extreme sunbaths, I mean). Sunlight is healthy in moderation. Just working or walking in the sun for some hours, yes, but turning around in the sunlight like a chicken in the oven, no.
Look at the local population in Southern Europe: they stay inside their homes between 11 a.m. and 3 p.m. when the sun shines hardest. Do like the locals and stay out of the sun when she shines at the hardest, and you will not need a sunblock of any kind.
I repeat: it is not my intension to hurt or to attack. This is only my opinion.
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Personally, I don't believe in using any sunscreen on my body, never have, never will. I always spend several hours a day in the sun in the summer and have lived in semi-tropical climates most of my adult life. I have NEVER had any problems with my skin. When I go back inside and after I shower I use lots of natural ingredients on my skin like aloe vera ( though I never burn) coconut oil, cocoa butter etc. I believe the sun is GOOD for us, not bad.
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Yes, sorry, please stay away from products that contain parabens of any sort. Formulas change all the time and the more natural companies are quicker to remove offending ingredients.
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Why do you recommend Kiss My Face that is loaded with hormone-disrupting parabens? Also, PABA, or para-aminobenzoic acid, is not the safe solution. There have been studies on whether PABA increases the formation of a particular DNA defect in human cells, thus increasing the risk of skin cancer. PABA derivative, Padimate O, reacts bimolecularly with DNA and produces indirect DNA-damages, that are similar to those done by ionizing radiation. Therfore Padimate O (OP-PABA) is presumably photocarcinogenic.
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I believe Arbonne International's products are considered safe. They use botantical oils to adhere the sunscreen to the skin, not chemicals.
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Your website mentions "Chemical-free and natural sunscreens use titanium dioxide, zinc oxide and PABA".How can PABA be natural? Isnt OP-PABA a derivative of PABA? I thought both are equally harmful. Please verify.
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The Environmental Working Group has just completed testing hundreds of sun protection products and their results can be found on their website. This is a great organization which provides a database of all kinds of skin care products with ratings of their safety.
If you are not familiar with this group check out my blog dated June 21 and 23, 2007 for more information.
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For scars and the like I use baby diaper ointment from Burt's Bees. The zinc oxide keeps the sun from reaching areas I don't want to expose. Otherwise I use shade and light clothing. Be careful with the chemical laden products mentioned above to be dangerous, esp on young children!!!
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