Comments on: To use or not to use: Nanotechnology in sunscreens http://www.foresight.org/nanodot/?p=2501 examining transformative technology Wed, 03 Apr 2013 18:23:47 +0000 hourly 1 http://wordpress.org/?v=3.0.4 By: Christine Peterson http://www.foresight.org/nanodot/?p=2501#comment-282885 Christine Peterson Tue, 19 Jun 2007 21:08:51 +0000 http://www.foresight.org/nanodot/?p=2501#comment-282885 Thanks, Pearl and Chris. There is a good link from Chris's URL to the National Geographic "Green Guide," which recommends the mineral sunscreens over the organic ones. Supposedly some of the latter can interfere with hormones or damage DNA. Not a simple issue here. —Christine Thanks, Pearl and Chris.

There is a good link from Chris’s URL to the National Geographic “Green Guide,” which recommends the mineral sunscreens over the organic ones. Supposedly some of the latter can interfere with hormones or damage DNA. Not a simple issue here. —Christine

]]> By: Chris Hamilton http://www.foresight.org/nanodot/?p=2501#comment-282576 Chris Hamilton Tue, 19 Jun 2007 19:18:40 +0000 http://www.foresight.org/nanodot/?p=2501#comment-282576 I've just been working with the W.S. Badger company who makes natural skin care products including a sunblock with micronized zinc oxide (mean partcle size >100nm). They have been confonted with customer concerns regarding the use of 'nanoparticles' and our review of current research concluded that micronized mineral sunblocks are indeed safe as the particles do not absorb deeper than the surface dead layer of the skin and they are in fact better than most sunblocks in that they block both UVA and UVB and do not contain sunblock chemical with known health risks. Read the one page statement at: https://www.badgerbalm.com/t-SPF_tech.aspx I’ve just been working with the W.S. Badger company who makes natural skin care products including a sunblock with micronized zinc oxide (mean partcle size >100nm). They have been confonted with customer concerns regarding the use of ‘nanoparticles’ and our review of current research concluded that micronized mineral sunblocks are indeed safe as the particles do not absorb deeper than the surface dead layer of the skin and they are in fact better than most sunblocks in that they block both UVA and UVB and do not contain sunblock chemical with known health risks.

Read the one page statement at: https://www.badgerbalm.com/t-SPF_tech.aspx

]]> By: Pearl Chin http://www.foresight.org/nanodot/?p=2501#comment-265172 Pearl Chin Fri, 15 Jun 2007 03:51:25 +0000 http://www.foresight.org/nanodot/?p=2501#comment-265172 Just my two cents. My peers who are interested in nanoparticle sunscreens are not interested in these because they work any better than current sunscreens. They buy them because they are allergic to chemical sunscreens and because they are transparent so they look natural. Purely for cosmetic and not functional reasons. And yes, zinc oxide and titanium dioxide should not break down over time so it can be hypoallergenic. The major concern is the particles may be so small they may get absorbed into the skin, how deep if they do and if it is toxic if it is and accumulates and can it be "washed" off/out easily. Yes, more research. Thanks and glad to be on board, Everyone. - Pearl Just my two cents. My peers who are interested in nanoparticle sunscreens are not interested in these because they work any better than current sunscreens. They buy them because they are allergic to chemical sunscreens and because they are transparent so they look natural. Purely for cosmetic and not functional reasons. And yes, zinc oxide and titanium dioxide should not break down over time so it can be hypoallergenic. The major concern is the particles may be so small they may get absorbed into the skin, how deep if they do and if it is toxic if it is and accumulates and can it be “washed” off/out easily. Yes, more research. Thanks and glad to be on board, Everyone. – Pearl

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