Sunscreen questions?

Spring seems to be starting slowly this year. We have had some beautiful warm and sunny days and I realized that I need to get back into the habit of applying sunscreen. One of our favorite pastimes, when my grandsons visit, is walking down the hill to the bridge over the creek and tossing stones into the stream. The boys could do this for hours. It is so easy to just head outside without a thought to how long we will be standing in the sun.

Both my husband and I have had MOHS surgery for skin cancer. I would like to avoid that for my grandsons. I do not always understand all the factors important to choosing an effective sunscreen so I thought a little research was in order.

Sunscreens come in two different varieties; they use either an organic filter or an inorganic filter.

Organic filters are chemical compounds designed to absorb UV radiation and convert it into a small amount of heat. These filters include oxybenzone, avobenzone, and octocrylene. Some people incorrectly think that these chemicals can cause skin cancer but research has demonstrated that this is not the case.

Inorganic filters are minerals that physically block the UV light from contact with skin. The minerals may be zinc oxide or titanium dioxide. They actually reflect and scatter the UV rays. Inorganic filters are often in sunscreens designed for children. These products are often thicker and look whiter than sunscreen made with an organic filter. These formulas also tend to be easier on skin so adults with sensitive skin may prefer inorganic filters too.

SPF can also be confusing. The recommendation for most people is an SPF of 30. This will protect against 97% of the UVB rays in sunshine. Sunscreens with SPF of over 50 add only a slight additional protection.

No sunscreen will perform well if not applied correctly. Think about the shot glass and teaspoon rule when applying. Use a teaspoon on your face and a shot glass amount on the rest of your body. Remember to reapply sunscreen containing an organic filter every two hours or after getting wet or sweating.

Stay safe this summer and prevent sunburns.



Liz Meimann

I received both my undergraduate and graduate degrees in Food Science at Iowa State University. I love to quilt, sew, cook, and bake. I spent many years gardening, canning, and preserving food for my family when my children were at home.

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2 thoughts on “Sunscreen questions?

  1. So would you recommend going with the organic filter sunscreen if you just had to choose one? Or, does it make sense to use both. Maybe the organic first and then the inorganic on top. I know its probably overkill, but I’m fair skin with freckles and so is my little girl, so I just want to be extra cautious.

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