Indications of PFAS "Forever Chemicals" in Deodorants -- Guide

August 16, 2024 // by Leah Segedie

Does your favorite deodorant contain indications of PFAS “forever chemicals?” PFAS “forever chemicals” are per- and polyfluoroalkyl substances used as stain-resistant, water-resistant, & oil-resistant chemicals in commerce. These chemicals are very useful, but also incredibly persistent and toxic. Mamavation was asked if any deodorants contained indications of PFAS and we were not sure unless they were tested. So we sent several off to an EPA-certified laboratory to find out. You’ve trusted Mamavation to bring you topics like safest period underwear without PFAS “forever chemicals,” safest green beauty makeup sans PFAS, or safest laundry detergent sheets without PFAS “forever chemicals,” now join us for our latest consumer study on indications of PFAS “forever chemicals” in some popular deodorants.

Disclosure: This consumer study is released in partnership with Environmental Health News. Scientific reviews were performed by (1) Terrence Collins, Teresa Heinz Professor of Green Chemistry & Director of the Institute for Green Sciences at Carnegie Mellon University, (2) Linda S. Birnbaum, Scientist Emeritus and Former Director of the National Institute of Environmental Health Sciences and National Toxicology Program & Scholar in Residence at Duke University, Adjunct Professor at the University of North Carolina, & Yale University, & (3) Scott Belcher, Associate Professor with the Center for Environmental & Health Effects of PFAS at North Carolina State University. This post was medically reviewed by Sondra Strand, RN, BSN, PHN. Donations were provided by Environmental Health News and Mamavation community members. Note that Mamavation has only “spot-checked” the industry and thus we cannot make predictions about brands and products that we have not tested. Products and manufacturing aides can change without notice so buyer beware. This post contains affiliate links, with some to Amazon, which means Mamavation will receive a portion of those sales and we will use that to pay ourselves back for the testing. You can also give a tax-deductible donation to our consumer studies here through Environmental Health Sciences. Thank you!

Table of Contents

Mamavation’s EPA-certified laboratory found indications of PFAS “forever chemicals” after analyzing 15 popular deodorants. PFAS is found in many other areas of our homes with some examples being cookware, makeup, drinking water, contact lenses & dental floss. These chemicals are linked to serious health effects, which we will discuss later. Because PFAS are so toxic, Mamavation has commissioned our own scientific studies on indications of PFAS in products to make recommendations for deodorants using PFAS-free materials. Read Mamavation’s articles on these products to find which brands are organic-fluorine-free.

For this consumer study, Mamavation sent 15 deodorants from 14 brands to an EPA-certified laboratory looking for indications of toxic PFAS “forever chemicals.” Here’s what we found:

Linda Birnbaum, Scientist Emeritus and Former Director of the National Institute of Environmental Health Sciences and National Toxicology Program & Scholar in Residence at Duke University, and Adjunct Professor at both University of North Carolina, & Yale University had this to say: “Because deodorants are applied every day to our bodies, it’s imperative the deodorant industry needs to find this contamination and address it immediately to ensure that women (& men) are no longer exposed when using their deodorants.”

PFAS “forever chemicals” are problematic for human health and the environment. They are considered ubiquitous, persistent, and toxic. In fact, many of these PFAS chemicals can last for years or decades in our bodies. The health effects from exposure to PFAS on the armpit areas right next to breast tissue are unknown. It’s also unknown what happens when it is absorbed into our tissues and travels around in our bodies. However, we do know that these areas can be vulnerable to toxic chemicals like PFAS “forever chemicals” because of the proximity to breast tissue and the lymphatic system. Therefore, it’s imperative to reduce the amount of PFAS you are exposed to from food, water, and consumer products like deodorant. Mamavation is dedicated to helping you do that when you are shopping for deodorant.

Here are some of the health effects of different PFAS “forever chemicals:”

It’s also very clear based on biomonitoring evidence from the Center for Disease Control (CDC) that PFAS are in all Americans. Therefore, these exposures can harm most Americans.

Terrence Collins, Teresa Heinz Professor of Green Chemistry & Director of the Institute for Green Sciences at Carnegie Mellon University said, “Can we learn to put the seductive technical and cost performances of PFAS compounds into a perspective that appropriately accounts for the horrible health, environmental and fairness performances? The answer, simply put, is “Yes!” In 2021, Maine became the first state to enact a PFAS ban in all products (by 2030), unless the use is deemed “currently unavoidable”. Hopefully more states and the entire Union will follow suit. In the meantime, each deodorant company could protect its customers by investing in finding out how much PFAS is in their products and disclosing this on their product labels. They should look well below the 10 parts per million limit that Mamavation can afford. Some PFAS compounds are endocrine disruptors. Wherever endocrine disruption operates, serious toxicity can be elicited at parts per trillion or at even lower doses.”

Many deodorants claim to be formulated by board-certified dermatologists or other types of doctors for the best odor protection, but how can ingredients that interact with hormones be recommended? Should you trade body odor for endocrine disruption, especially around tissue that is very close to your breasts? Many conventional deodorants or roll-on deodorants, contain a formula with ingredients that can be problematic to human health. So what types of chemicals should you avoid in deodorants? Here are some of the most problematic.

When you pick a more “natural” deodorant without petroleum-based ingredients and find that it doesn’t work on you, don’t fret! There are things you can do to train your underarms to respond better to natural deodorant. You may not be able to control how much you sweat or moisture that comes from your sweat glands, but you can cut down on the bacteria and unpleasant smell that comes from your armpits with natural deodorants by doing an armpit cleanse.

There are a few simple steps you need to take to detox and safely switch to a natural deodorant. The following four steps make up Leah Segedie’s recommended cleanse:

Note that the first day you start this armpit cleanse, you may be repeating these steps 5 to 10 times in the first day, but with each application you should be able to go longer and longer. You may want to start this cleanse when you have time to spend indoors at home, like on the weekends. My own cleanse ended after the 4th day, and the average person takes 4-7 days to complete this cleanse. After this cleanse, your natural deodorant should work better and last longer.

If you find that you are sensitive to baking soda, red spots or irritation may develop on your armpits. Don’t worry, just pick up another type of deodorant that doesn’t have baking soda. Once you stop using it, those spots should go away.

Before we launch into the raw data from our lab, we wanted to remind you about all the other studies we have done on indications of PFAS “forever chemicals” inside the food and consumer products you may bring inside your home. Each one of these studies were done in a similar fashion as this study with brands sent independently to the lab and raw data of those labs at the bottom of the post.

Deodorants were purchased between February 2023 and February 2024. For this consumer study, all products were purchased by Mamavation either at Walmart or from Amazon. Each product was recorded in our database and then sent directly to the lab within its original packaging.

Testing: Mamavation’s EPA-certified laboratory uses marker testing to identify the potential presence of PFAS “forever chemicals” in deodorants. Organic fluorine is a marker for PFAS because all PFAS chemicals are carbon-based compounds that contain fluorine. The specific lab method used to test for total fluorine was the Determination of Total Fluorine by Oxygen Flask Combustion and Ion-Selective Electrode. If total fluorine was observed at a detection level of 10 ppm or greater, the lab did the Determination of free Fluoride Ion in the product by Ion-Selective Electrode and then subtracted that from the Total Fluorine to determine the amount of organic fluorine. This marker testing is likely to show the presence of PFAS. Organic fluorine can also capture other fluoropolymers, pharmaceuticals, and common hydrofluorocarbon refrigerants, such as 1,1,1,2-tetrafluoroethane (commonly known as R-134a) and 2,3,3,3-tetrafluoropropene (commonly known as HFO-1234yf), which are all also PFAS. None of which you want around your food, or personal care products like deodorants!

Scott Belcher, Ph.D. & Associate Professor with the Center for Environmental & Health Effects of PFAS at North Carolina State University says “fluoropolymers, such as polytetrafluoroethylene (PTFE), are extremely common forms of PFAS that could be contributing to the organic fluorine found in deodorants. Methods used for detecting individual PFAS, such as PFOA or GenX, cannot directly identify PTFE. However, the analysis of total organic fluorine (TOF) does account for all PFAS contaminants in deodorants, including PTFE. Therefore, this method of testing serves as a good ‘spot-check’ of consumer products.”

These products were sent to an EPA-certified laboratory and found to have detectable organic fluorine, which is indicative of PFAS “forever chemicals” inside.

This group of products were sent to an EPA-certified lab and were found NOT to have any detectable organic fluorine. However, there are other ingredients inside these product, like “fragrance” that we are concerned with and have put them in the better realm instead.

This group of deodorants were sent to an EPA-certified lab and were found to NOT have any detectable organic fluorine. They also had ingredients that were not expected to disrupt hormones, so we added them to the “best” category. (Unfortunately, the safest deodorants we found all use baking soda in their formulations, so we will have to continue testing more brands to find alternatives that do not for you at a later date. This may be a problem for people with sensitive skin who get contact dermatitis or skin irritation from baking soda exposure.)