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Thursday
Jun282012

Can We Trust Zinc Oxide?

 

Whether it’s rash cream, sunscreen, itch relief salve or wound care, there’s a common ingredient listed in a variety of skin care products: zinc oxide.  If zinc oxide can truly be counted on to prevent or treat a wide range of skin conditions, the next question is, is it safe?

 After reading up on what the experts say, I continue to bank my confidence on this mineral and here’s why:

  1. Chemical sunscreen ingredients like oxybenzone (in 60% of sunscreen products) penetrate the skin and enter the bloodstream, potentially disrupting the hormonal system. Physical or mineral sunscreen ingredients, like zinc oxide and titanium dioxide, reflect the sun like a mirror, and keep the sun’s rays from reaching your skin.  Unlike oxybenzone, zinc oxide is non-toxic.
  2. Authorities like Dr. Mercola, the Environmental Working Group, and Dr. Sears recommend using a sunscreen with zinc oxide as the primary sunscreen ingredient. It is the broadest spectrum UVA and UVB reflector that is approved for use as sunscreen by the FDA, and has a time-tested safety record.
  3. We’ve used our homemade rash cream and sunscreen on our own family and we’ve found that diaper rash disappears, chaffed skin from rubbing heals quickly, and sunburns are avoided. 

So what’s the deal with the nanoparticle controversy and is zinc oxide linked to cancer? 

            A nanometer refers to size, and one nanometer is 100,000 times thinner than a strand of hair. There was concern that particles less than 30 nanometers could be absorbed through the skin and into the bloodstream. Cosmetic companies preferred the smaller particle-sized zinc oxide because the finished product could be applied without excessive whiteness to the skin. It turns out, there are no studies proving that nanoparticles of zinc oxide could penetrate healthy human skin, and studies linking zinc oxide to cancer have been inconclusive. To calm customer fear, the majority of companies who use zinc oxide now use the larger, non-nano sized particles. If you are making your own skin care products and want to be on the safe side, make sure the zinc oxide you buy is non-nano zinc oxide.  (You can order uncoated, non-nano zinc oxide from us at MadeOn or in larger quantities at From Nature With Love.)

Is there any way that zinc oxide is NOT safe?

  •    It’s not safe to inhale.
  •    It may not be safe to consume.
  •    By itself it is not an allergen, but combined with other ingredients, you could react to something in the product. It could be irritating if rubbed into the eye.
  •    For best results, use sunscreen containing zinc oxide within a year as zinc oxide has a one year shelf life (unless otherwise noted on your purchased sunscreen).
  •   Too much of a sunscreen protection and you’ll keep out the needed UVB light needed to produce vitamin D.  You need to spend some time out in the sun with NO sunscreen.

Have you considered making your own sunscreen? It's easy!  

 

Resources:

http://breakingnews.ewg.org/2012sunscreen/sunscreens-exposed/sunscreens-exposed-9-surprising-truths/

http://www.badgerbalm.com/s-33-zinc-oxide-and-nanoparticles.aspx

 

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Reader Comments (6)

So you wouldn't reccomended a daily face lotion with zinc oxide in it? Would that even be effective? I've heard you need to reapply zinc oxide sunscreens frequently. Thanks for all the great info!

June 28, 2012 | Unregistered CommenterSami

Thanks for all the great information and taking the time to research zinc oxide! I plan on making my first batch of sun screen for my family to try over the 4th of July.

June 29, 2012 | Unregistered CommenterJennifer

Awesome! I've been wondering how to do this. Thanks for sharing! I especially am grateful for the written instructions since it is so hard to stream video for me. (We live in the middle of NOWHERE and internet connection is finicky.) Thank you!

June 29, 2012 | Unregistered CommenterMom @ Cube2Farm

Thanks for doing all of this research on zinc oxide. I had read some disturbing things about it, but I am glad that you were able to do additional research and post your results. This helps me feel much more confident using it! :)

June 29, 2012 | Unregistered CommenterMom @ Cube2Farm

@Sami, you could certainly use a daily face lotion with zinc oxide but you may want to every now and then skip it altogether, or make sure you're not completely covered (the rest of your body) with a sunscreen ingredient like zinc oxide so that you get plenty of UVB exposure, which activates the Vitamin D production.

June 30, 2012 | Registered CommenterRenee Harris

There are generations of lifeguards in our family who always used zinc oxide. I like the idea of making my own sunscreen and rash ointment with zinc oxide rather than using the concoctions at the store with ingredients I can't read.

July 5, 2012 | Unregistered CommenterJenny

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