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jcwat101
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Posted: Mon Jul 26th, 2010 01:01 |
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I posted here: http://www.marshallprotocol.com/view_topic.php?id=13724&forum_id=11&jump_to=198358#p198358 (for non members, I have repeated the post below) about why newer evidence indicates that to be on the cautious side, it may be better to use micronized (larger particle) zinc oxide and titanium dioxide instead of the newer, nanoparticle (more invisible) minerals.
You can post here if you have anything to report about the various sunscreens.
I urge you to participate and share what you learn to help others.
If you want to know if the one you use has nanoparticles or not, check the label and/or call the company.
Of course, some of those links to articles in the post that I linked to above (see below) say that the manufacturers are not always honest. How "invisible" the sunscreen is can also indicate if it is nanoparticle or not. If it appears a bit whiter on the skin just after being applied, then it is the micronized rather than the nanoparticles.
Apparently, the larger particle size, used in the Kabana sunscreen is the micronized, which has been around for decades. If it is larger particles than that, then it looks more like clown paint.
If we do gather some information on the nano status of various sunscreens in this thread, I would appreciate it if someone would volunteer to compile the information, as I don't have time to do it.
Joyce Waterhouse
I have repeated my post from the other thread here:
<<Trevor has brought to my attention that there are some newer articles criticizing nanoparticles and casting doubt on their safety.
This one has the most specific information -- but the question is whether the particles come into contact with live human cells or stay in the outer layer of dead cells.
Nano World: Nanoparticle toxicity tests
These two are more general, but discuss many issues, including potential environmental damage:
Nano-tech sunscreen presents potential health risk - ABC News (Australian Broa
http://www.foe.org/sites/default/files/SunscreensReport.pdf
BTW, the Australian government still thinks the data is not strong enough to indicate danger, but says it is monitoring emerging research: http://www.tga.gov.au/npmeds/sunscreen-zotd.htm
It may be worthwhile, based on the precautionary principle to try to not use nanoparticle sized zinc or titanium until their safety is more established and instead use NON nano zinc oxide (or titanium if you prefer it) if you feel you need sunscreen.
The nanoparticle issue is one of the reasons I use Kabana. They are a small company and I think that is why they don't get much attention (e.g., in the links below), but they seem to be really aware of the safety issues.
I remember a few years ago when Kabana switched from nanoparticles to larger food grade particles of zinc. It is clear that it does go on the skin whiter than some others (an indication of it being the larger particles), but I find that if I apply it to my face the night before, that it isn't a problem and it doesn't need to be reapplied until I wash my face (I learned how to take a shower without getting my face wet and that comes in handy).
Here are some more relevant links:
A study cited on Kabana's web site indicating very small nanoparticles can penetrate mouse skin that is damaged or after a certain level of UV exposure: http://www.kabanaskincare.com/Publications/Nanoparticle_Penetration_UVR.pdf
Kabana's discussion of safety issues: http://www.kabanaskincare.com/kabana_label_reader_column_detail.htm
Some links on nanoparticles in sunscreen and which are likely to be free of nanoparticles:
http://consumerist.com/2008/10/consumer-reports-why-are-companies-lying-about-putting-nanoparticles-in-your-sunscreen.html
http://www.wellsphere.com/green-living-article/nanoparticles-in-sunscreen-what-they-are-how-to-avoid-them/19674
http://www.organicconsumers.org/articles/article_18007.cfm
http://www.vibrantglow.com/2008/07/chemical-free-nano-free-sunscreen.html
Joyce Waterhouse>>
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20 yrs with CFS/FM/Lyme/IBS, food sensitivities; 1,25D/25D 8/04:64/11 http://SynergyHN.wordpress.com
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jcwat101
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Posted: Thu Jul 29th, 2010 16:06 |
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20 yrs with CFS/FM/Lyme/IBS, food sensitivities; 1,25D/25D 8/04:64/11 http://SynergyHN.wordpress.com
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jcwat101
Support Team
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Posted: Sat Sep 4th, 2010 12:12 |
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| Still looking for comments here -- Joyce Waterhouse
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20 yrs with CFS/FM/Lyme/IBS, food sensitivities; 1,25D/25D 8/04:64/11 http://SynergyHN.wordpress.com
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