Feminine hygiene products' safety is a big thing. Even while manufacturing, these products must be handled with care because unsafe practices can lead to serious health issues. These products are used for the hygiene of intimate areas, and it is very easy to get infections and other health issues from using improper period products and so one must be careful. Now, there are many more period products, many of which are reusable. Reusable period products aim to make period hygiene more accessible as well as reduce wastage. However, could these reusable products be the cause of declining health? A new study, published on July 22 in Environmental Science & Technology Letters, found that reusable feminine hygiene products, like period underwear and reusable pads, often contain harmful chemicals called PFAS. These are known as "forever chemicals" because they don't break down easily in the environment or our bodies. This is a big deal because more and more people are choosing these products for their eco-friendly benefits. Are Hygiene Products for Women Safe? Researchers from the University of Notre Dame, checked 59 reusable feminine hygiene products from different countries. They tested products from five categories to see how much total fluorine, a sign of PFAS, they contained. For products with many layers, they tested each layer separately, making for a total of 323 samples. PFAS in Many Products The study found that a lot of period underwear (33%) and reusable pads (25%) had high levels of PFAS on purpose. While most other products had lower levels of PFAS, likely not added on purpose, 19 products were tested more closely for specific PFAS chemicals. Every single one of these 19 products had PFAS, with two common types being 6:2 and 8:2 fluorotelomer alcohols. Products from North America, South America, and Europe all had at least one item with these intentionally added PFAS. However, the good news is that at least one product in each category did not have any intentionally added PFAS. This suggests that these chemicals aren't actually needed to make these products. Risks to Health and the Environment Researchers stressed how important it is for these reusable products to be safe, especially for young women who might be more sensitive to these chemicals. Finding PFAS in reusable period products is worrying for a few reasons: Health Problems PFAS have been linked to many health issues, including problems with the immune system, hormones, development in children, low birth weight, early puberty, high blood pressure in pregnant women, and even some cancers. These chemicals are so widespread that they're found in the blood of most Americans. Skin Contact Since these reusable products touch the skin directly, there's a concern that PFAS could be absorbed into the body. Environmental Harm When these products are thrown away, the PFAS in them can stay in landfills for a long time, polluting our water sources. How Do We Ensure Safety? According to the University of Notre Dame news release, the researchers purposely didn't name specific brands. Instead, they hope their study will push companies to be more open about the ingredients in their products. Dr. Graham Peaslee, another author, pointed out that while reusable period products are seen as eco-friendly, the presence of PFAS goes against that idea, harming both users and the environment. A key finding is that only some brands are intentionally using PFAS. Researchers explained, this means PFAS aren't essential for making these products. This is positive news, as it suggests manufacturers can create these environmentally friendly items without using concerning chemicals. The study aims to help people ask manufacturers the right question: "Does this product contain any intentionally added PFAS?" Since there are currently no rules for labeling these products, and only a few U.S. states have laws about PFAS in consumer goods, studies like this are vital. They help regulators and manufacturers find where PFAS are being used and encourage the development of safer alternatives.