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Why a natural vs chemical sunscreen is a better for your health? Well get your glasses and start reading now *

When people refer to natural and/or organic sunscreen, they are usually talking about a mineral-based cream containing zinc and/or titanium that has healthier ingredients than a synthetic/chemical sunscreen you might find at your local drugstore. A better term we should actually use would be "nontoxic sunscreen," as it implies that we are comparing a more environmentally aware product with a traditional sun-protection product.

Why choose an organic sunscreen over a traditional one?

Most widely available sunscreens contain not only sun protection chemicals but parabens, fragrance, phthalates, and multiple ethoxylated ingredients, as well as often being packaged in an aerosolized can: That knowledge alone is a great reason for choosing a non-toxic sunscreen over a traditional brand.

What is a mineral sunblock?

Zinc oxide and titanium dioxide are the two physical/mineral sunblocks used in the natural sunscreen industry. They are also referred to as barrier sunblocks. Rather than filtering the rays of the sun and diminishing the harmful effects of UV light (this is the action of a chemical sunscreen), a physical sunblock sits on top of the skin and reflects the sunlight. It’s like the difference between a filter and a mirror—the filter breaks up the sunlight and deactivates it, and the mirror reflects it instead. Nanoparticles complicate this issue because they can get absorbed by the skin cells to some degree, and more work needs to be done to find out if this could have detrimental effects. Some researchers believe that nanoparticles get taken into skin cells where they heat up and accelerate sun damage, but the evidence is not conclusive yet.

Is a barrier sunblock better than a chemical sunscreen?

There seems to be increasing evidence that oxybenzone, a very common chemical sunscreen, may act like estrogen in the body, which increases the likelihood that it will disrupt our innate hormone cycles. Another controversial chemical is retinyl palmitate, which can slow skin aging but may actually accelerate the development of certain skin cancers when it comes in contact with ultraviolet light. PABA is not used as much as it once was, but there’s a fairly large population of people who are allergic to that ingredient by now. In short, there are several really good arguments for using a non-nano physical sunscreen made with zinc oxide or titanium dioxide: They are not absorbed by the skin; they are not degraded by exposure to sunlight, making them more stable over time; and there are often fewer and less toxic ingredients that make up the "inactive" ingredients in the product. To sum it all up—what should you look for in a sunscreen?

Look for fewer ingredients overall, stick with non-nano zinc and titanium particles until we know more about the effects of nanoparticles, and look for a product with no parabens and no fragrance. (Even essential oils oxidize in sunlight, which can increase your chance of having a skin reaction to them.) An SPF of 30 is probably sufficient, and you should still be wearing hats and long sleeves whenever you’re not splashing in the water. 

* Our blog post was paraphrased from a great article written by Dr. Sarah Villafranco 
in Mind Body Green

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