Guide to Safe Sunscreen

Wear sunscreen, and don’t forget to re-apply. Simple, right? Unfortunately, when it comes to sun protection, there is a lot to consider regarding the safety, efficacy, and environmental impacts of the products you’re using. You may have recently heard some concerning information regarding how quickly certain chemical components in sunscreen are absorbed into the bloodstream. Because sunscreens are not subject to standard drug safety testing, consumers are justified in questioning the safety of these products.

In February of 2019, the Food and Drug Administration (FDA) issued a proposed set of rules for sunscreen products. These rules would be an improvement on our current safety standards; however, it is guaranteed that chemical manufacturers and certain sunscreen companies will lobby heavily for a weaker proposal. In the meantime, it is up to you, the consumer, to sift through the lesser products on the market and select the ones that will be good to your body, your family, and our planet.

sunscreen kimberton whole foods

The Basics

UVB vs UVA Rays

Sunscreen Kimberton Whole Foods

Graphic Courtesy of

The sun emits ultraviolet light, or radiation, including ultraviolet B (UVB) and ultraviolet A (UVA). UVB rays produce sunburn. They are also the main cause of non-melanoma skin cancers, such as squamous cell carcinoma. UVA rays also play a role in skin cancer formation. These rays deeply penetrate the skin and play a role in skin aging. Approximately 95% of the UV light that reaches our skin is UVA light, therefore it should be of great concern. Unfortunately, American sunscreens generally contain inferior UVA protection as compared to those in Europe – you can read more about that here. According to the Environmental Working Group (EWG), zinc oxide is one of the best UVA filters in American sunscreens.

Broad Spectrum

Current FDA regulations for “broad spectrum” (providing both UVB and UVA protection) sunscreens require that they have a critical wavelength value of 370 nanometers. This sets the bar low enough so that just about every sunscreen on the US market can bear the label “broad spectrum”. Until the FDA makes changes to their regulations, it is wise to read the ingredients in your sunscreen and decide for yourself whether it is truly going to protect your skin from UVB and UVA rays.

Sunscreen Kimberton Whole Foods

Brian L Diffey et al., Suntanning with Sunscreens: A Comparison With Sunbed Tanning. Photodermatology, Photoimmunology & Photomedicine, 2015, 31(6), 307–314.

Sunscreen Kimberton Whole Foods

Photo Courtesy of Badger Balm

Guide to SPF

Sun Protection Factor (SPF) is a measure of how well a sunscreen will protect skin from UVB rays. Here’s a helpful look at what the SPF number really means:

  • SPF 15 blocks 93% of UVB rays
  • SPF 30 blocks 97% of UVB rays
  • SPF 50 blocks 98% of UVB rays

According to the EWG, “Products with high sun protection factor, or SPF, tempt people to apply too little sunscreen and stay in the sun too long. The FDA has proposed prohibiting the sale of sunscreens with SPF values greater than 60+ and have called higher SPF values “inherently misleading,” but the agency has not yet issued a regulation that carries the force of law.”

Efficacy of Sunscreen

Let’s set one thing straight: sunscreen helps protect your skin, but it does not make you impervious to the sun’s damaging rays. One of the worst mistakes you can make is to count on your sunscreen providing more protection than it actually does: remember that staying out of the sun and covering up your skin with SPF clothing (and hats, sunglasses, etc.) are the most fool-proof methods of skin protection. As with most products, correct use is key – so follow instructions on how much to use and how often to apply, carefully. Don’t forget your eyelids, ears (front and back!), any exposed areas of your scalp, and of course an SPF lip balm to protect your lips.

Badger Balm Sunscreen Kimberton Whole Foods

Photo Courtesy of Badger Balm


The Good

Mineral Filters

Mineral sunscreens use zinc oxide and/or titanium dioxide. Although these have a bad reputation for being chalky and bright white, many formulas available today feel smooth and rub in easily. (See our product suggestions, below!) According to the EWG, “The weight of evidence indicates that both zinc oxide and titanium dioxide pose a lower hazard than most other sunscreen ingredients approved for the U.S. market.”

Organic Ingredients

At Kimberton Whole Foods, our goal is always to provide as many organic options as possible, and that includes skincare. Look for sunscreen brands that use organic oils and beeswax as their base.

The Bad

Chemical Filters

Chemical filters in sunscreens include oxybenzone, avobenzone, octisalate, octocrylene, homosalate and octinoxate. Sometimes a single product will contain a combination of 2 or more of these. Oxybenzone and Octinoxate are hormone-disrupting chemicals, and are linked to coral bleaching in reefs. 

Artificial Dyes & Fragrances

We believe that artificial dyes and fragrances have no place in skincare, and this includes sunscreen. What you put on your skin is just as important as the food you put into your mouth!


Nanoparticles are microscopic particles, which are thought to be potentially harmful to human health and hazardous to coral reefs. Once again, manufacturers are not required to disclose the qualities of the particles used in their sunscreens, so it can be hard to know whether your mineral sunscreen is made using nanoparticles. When in doubt, we still recommend that you select a mineral sunscreen. Learn more on this topic here.

Environmental Impact

You may have noticed the term “Reef Safe” on certain sunscreens. Unfortunately, this is not yet a regulated term. Look for sunscreens free of oxybenzone and octinoxate, and instead use mineral-based sunscreens, like those made with zinc oxide. Avoid sunscreens that contain nanoparticles. (Look for the term “non-nano”, or ask the company directly if their packaging doesn’t state this clearly.) Also, look for the word “biodegradable”, but note that this term, too, is unregulated, so you may need to follow up with the company to verify their claim, or carefully read through the list of ingredients to check. (Plant oils and beeswax are great biodegradable options!)

Brands to Look For

Badger sunscreens are a top-rated choice by the EWG. Find their entire line at all our stores! Their zinc sunscreen is both safe and effective, and rubs in clear. All Badger sunscreens range from 84% to 99% Certified Organic by the NSF, and they comply with the Leaping Bunny Standard that ensures their products are not tested on animals.

Alba Botanica biodegradable sun care products offer broad spectrum protection, and are reef-friendly, free from oxybenzone and octinoxate. Certified by the Gluten-Free Certification Organization.

Still have questions? Learn more than you ever thought you could know about sunscreen, and see a ranking of brands on the Environmental Working Group website.