Nanotechnology & sunscreens – EWG’s 2009 investigation


The Environmental Working Group (EWG) reviews the situation concerning nanoparticles in sunscreens in a dedicated section of its  2009 sunscreen guide, released today. I find particularly interesting this paragraph of their investigation’s contrasted conclusion : “When we began our sunscreen investigation at the Environmental Working Group, our researchers thought we would ultimately recommend against micronized and nano-sized zinc oxide and titanium dioxide sunscreens. After all, no one has taken a more expansive and critical look than EWG at the use of nanoparticles in cosmetics and sunscreens, including the lack of definitive safety data and consumer information on these common new ingredients, and few substances more dramatically highlight gaps in our system of public health protections than the raw materials used in the burgeoning field of nanotechnology. But many months and nearly 400 peer-reviewed studies later, we find ourselves drawing a different conclusion, and recommending some sunscreens that may contain nano-sized ingredients“.

The Nanotechnology & Sunscreen section of the guide more precisely reviews the following issues :

* Safety concerns of nanoparticles

–> potential for human uptake of nanoparticles by skin absorption/penetration (for TiO2 and ZnO nanoparticles)

–> dermal penetration of other nanoparticles

–> oral exposures to nanoscale zinc and titanium

–> inhalation exposures to nanoscale zinc and titanium

* Toxicity of nano-scale zinc and titanium

* Nano-scale zinc and titanium life-cycle and environmental risks

The Impact of nanoparticles section of the guide includes lists of titanium and zinc nanoparticle suppliers.

[[[ Additional links suggested by Nanocolors :

# Statement by John Bailey, Chief Scientist The Personal Care Products Council, Response to EWG’s 2009 Sunscreen Report

# ZnO nanoparticles in biomedical publications since 2000

# TiO2 nanoparticles in biomedical publications since 2000

# Industry critics give nanotechnology sunscreens the thumbs up ]]]

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3 Responses

  1. […] Nanotechnology & sunscreens – EWG's 2009 investigation … […]

  2. […] # Nanotechnology & sunscreens – EWG's 2009 investigation […]

  3. […] # Nanotechnology & sunscreens – EWG’s 2009 investigation ]]] […]

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