How to Choose the Best Sunscreen
Summer is here and many of us are stocking up on sunscreen. With numerous chemicals, formulations and strengths available it is hard to know which is ideal for you.
Below are some tips to consider when shopping:
Avoid oxybenzone. The Journal of American Medical Association published a study in February 2019 demonstrating that sunscreens are readily absorbed into the blood stream through the skin. Oxybenzone is a chemical UV absorber that may mimic human hormones. This means it can interfere with the endocrine system that regulates our metabolism, growth and reproductive system. Additionally, oxybenzone can be a trigger for allergic skin rashes. Beyond human safety, oxybenzone has a negative impact on the ocean ecosystem.
Be wary of high SPF ratings. Many of us equate a high SPF (sun protection factor) level with increased protection. Unfortunately, this is often not the case. Sunlight is composed of UVB rays which can burn our skin, and UVA rays which can penetrate our skin to accelerate aging and trigger skin cancer. SPF is a rating of a product’s ability to protect the skin from UVB rays. A high SPF level may give us a false sense of security that we are adequately protected from both UVA and UVB rays. The American Dermatology Association recommends using a sunscreen with an SPF of at least 30, which blocks 97 percent of the sun's UVB rays. When looking for a sunscreen, look for a product that offers UVA/UVB coverage. Zinc oxide and titanium dioxide are two ingredients that are not absorbed into the skin so they are safer to apply. They also provide both UVB and UVA protection for more complete coverage.
Avoid sunscreen sprays. Sunscreen sprays may be convenient, but there are risks associated with inhaling the small chemical particles. Additionally, application can be challenging. It is difficult to know if you have used enough sunscreen to cover all sun-exposed areas of the body, which may result in inadequate coverage and a spotty burn.
Looking for additional guidance when choosing a safe and effective sunscreen? Check out the Environmental Working Group’s Sunscreen Guide or see my blog on the products I use.