Tag Archives: Australian Education Union

Canada’s plans for nanosunscreens mentioned at Europe’s Nanotechnology Safety for Success Dialogue and sunscreens in Australia

I posted (April 14, 2011) about the March 29 – 30, 2011 Nanotechnology Safety for Success Dialogue which took place in Brussels (Belgium). I took note of a fierce debate over a nanomaterials definition. (The debate was whether there should be an interim definition or if they should wait until they had enough information to create a finalized definition.

Thankfully a reader has recently redirected my attention to this meeting as I had failed to notice that Canada made a presentation at the meeting. Consequently, I have found more information about Canada’s nanotechnology activities as they pertain to safety through an international organization. (I have searched the Health Canada website and the Canadian federal nanoportal and am unable to locate this presentation on either site.)

The presentation (all 15 slides) was given by Ratna Bose, Ph. D., Manager, Nonprescription Drugs Evaluation Division; Bureau of Gastroenterology, Infection, and Viral Diseases; Therapeutic Products Directorate. There is a Health Portfolio Nanotechnology WG (I imagine this means working group). Here’s how the portfolio is organized and managed (from slide #3),

Chaired by Science Policy Directorate
• Co-ordinates activities and facilitates information sharing on nanotechnology and nanomaterials within HC
• Includes representatives from Directorates regulating nanomaterials
• Each Directorate is responsible for policies and guidances specific to their respective jurisdiction

Here are the products Health Canada regulates (from slide #5),

Health Canada Regulated Products that May Contain Nanotechnology

• Drugs
• Medical devices
• Biotechnology products
• Tissue engineering products
• Vaccines
• Natural Health products
• Food Ingredients, packaging, manufacturing process

I notice that the head states that the products may contain nanotechnology, which seems odd. They might contain nanomaterial(s) and/or be nanotechnology-enabled but they can’t contain nanotechnology in the same way they contain biology. Plus, I thought Agriculture Canada regulated food (I will check this out).

This is what they are proposing for future work (from slide #12),

Regulatory Perspective
Develop standardized risk assessment methods
Develop regulatory, product-specific guidance documents
Build regulatory capacity/expertise

Scientific Perspective
Continue participation in international activities (e.g., ISO, OECD)
Explore collaborative work to develop methodologies to detect, characterize and measure NMs by working with industry as well as domestic and international partners

Awareness Perspective
Develop public engagement and risk communication strategies
Engage industry stakeholders

Under Awareness Perspective they’ve linked public engagement and risk communication together. Is risk communication the only reason they’re planning public engagement?

The slides indicate that there will be a case study developed around nanosunscreens. From slides 13 & 14,

Sunscreens are regulated as drugs in Canada, subject to either the Food and Drug Regulations or the Natural Health Product Regulations depending on the active ingredient and claim.

The Sunburn Protectants Monograph outlines active ingredients and their concentrations, as well as appropriate warnings, directions for use, and claims which are generally considered to be safe and effective.

The nanomaterial based sunscreens are excluded from the Sunburn Protectants monograph.

In order to satisfy the Safety & Effectiveness requirements of the Regulations, safety data are being requested.

I wonder where the safety data is coming from?

Meanwhile, there was a May 23, 2011 post by Dr. Andrew Maynard on the University of Michigan’s Risk Science Blog about a recent nanosunscreen event in Australia. From the posting,

Last week, the Victoria branch of the Australian Education Union (AEU) passed a resolution recommending that “workplaces use only nanoparticle-free sunscreen” and that sunscreens used by members on children are selected from those “highlighted in the Safe Sunshine Guide produced by Friends of the Earth” as being nano-free. The AEU also resolved to provide the Friends of the Earth Safe Sunscreen Guide and Recommendations to all workplaces their members are associated with. Given what is currently known about sunscreens – nano and otherwise, I can’t help wonder whether this is an ill-advised move.

The debate over the safety or otherwise of nanoparticle-containing sunscreens has been going on for over a decade now. Prompted by early concerns over possible penetration through the skin and into the body of the nanosized titanium dioxide and/or zinc oxide particles used in these products – and potential adverse impacts that might result – there has been a wealth of research into whether these small particles can actually get through the skin when applied in a sunscreen. And the overall conclusion is that they cannot. There have been a small number of studies that demonstrate that, under specific conditions, some types of nanoparticle might penetrate through the upper layers of the skin. But the overwhelming majority of studies have failed to find either plausible evidence for significant penetration, or plausible evidence for adverse health impacts [emphasis mine] – a body of evidence that led the Environmental Working Group to make an about-face from questioning the use of nanoparticle-containing sunscreens to endorsing them in 2010.

If you’re interested in the nanosunscreen discussion, I highly recommend Andrew’s writing on the subject, the report by the Environmental Working Group, and the report by the Friends of the Earth for a comprehensive view of the discussion.

As for me, I believe, given the information at hand, that nanosunscreens are relatively safe for most adults and I reserve the right to change my opinion should new information emerge. Meanwhile, I look forward to learning more about Health Canada’s nanotechnology safety efforts and hope that one day the information will be easily accessible on the Health Canada website or the federal nanoportal. Who knows maybe there’ll be a public engagement exercise on the topic of nanosunscreens?