Study Links Kids’ Skin and Hair Products to Phthalate Exposure

New research has discovered it’s likely that skin and hair care products are exposing children to potentially harmful endocrine-disrupting chemicals.

The study, published last week in Environmental Health Perspectives, collected urine samples from 630 kids ages 4 to 8 after parents were asked to fill out questionnaires about the exact types and brands of skin and hair care products used on the children in the past 24 hours. Concentrations of 16 different types of phthalates—a class of endocrine-disrupting chemicals—were found in the urine samples. Products associated with the highest levels of phthalates were body lotions, body oils, “2-in-1” shampoo and conditioners, and ointments. Black, Asian, and Hispanic children were also found to have higher phthalate urine levels than other sociodemographic groups.

While past studies have only looked at phthalates’ effects on fetuses, this study shows that young children are being consistently exposed to endocrine disruptors—chemicals that have been linked to long-term developmental and reproductive health effects, per the study.

What does this mean for parents; should we all be worried? And are there ways to protect children from phthalates? We spoke with Gowri Reddy Rocco, MD, a double board-certified family medicine physician who specializes in regenerative health and hormones, to learn more.

We’re all exposed to endocrine disruptors, but children are more vulnerable

Many of the personal care products, fragrances, plastic packaging, pre-packaged foods, detergents, perfumes, and plastic water bottles sold in the U.S. have endocrine-disrupting chemicals, particularly phthalates.

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“Phthalates are a group of chemicals that help make plastic more pliable and flexible,” says Dr. Rocco. But they can also be found in things like shampoos, lotions, ointments, and other personal care products.

What do these chemicals do in the body? They mimic, block, or interfere with hormones in the body’s endocrine system, per the Endocrine Society. While phthalates typically flush out of our system within two days, per the Centers for Disease Control and Prevention (CDC), the buildup of exposure can have long-term effects, per the study. According to Dr. Rocco, this can include fertility and reproductive issues, including low sperm count and inability to conceive, as well as an increased risk for breast cancer, obesity, and thyroid issues.

More new research has even found these chemicals may cause girls to enter puberty earlier, increasing their future risk of things like heart disease and breast cancer, per a September 2024 paper in Endocrinology. In young children, endocrine disruptors have also been associated with developmental delays and reproductive health issues in the future, per Dr. Rocco and a December 2015 review in Endocrine Reviews.

Children are especially vulnerable to the effects of products that touch the skin because they absorb substances more easily than adults, per the Environmental Health Perspectives study. Additionally, children’s organs are more vulnerable to disruptions as they are still developing, says Dr. Rocco.

Should we be worried about these study findings?

Dr. Rocco says we shouldn’t let these findings send us into a panic, but they should definitely raise a healthy level of concern about the chemicals we’re exposed to every day. This study didn’t confirm that skin care products caused negative health outcomes; it simply demonstrated that children’s exposure to harmful chemicals in skin and hair care is frequent and high.

Unfortunately, it’s really difficult to limit endocrine-disruptors from our daily lives. These chemicals are in so many things, and the study authors acknowledge this as a gap in their research. (While they did ask parents about their children’s diet and environments, there was no way to tell for sure whether these contributed to elevated phthalate levels or if it was from skin and hair care products alone.)

The study also highlighted that for families with a lower socioeconomic status, less expensive products—which may contain these harmful chemicals—might be their only options. Products labeled “phthalate- or paraben-free” are often more expensive. And even so, certain products labeled “phthalate- and paraben-free” may not actually be completely free from these ingredients, the Environmental Health Perspectives study pointed out.

The study also found that children of color simply used more hair oils and lotions than other groups in general, upping their exposure to harmful chemicals. In fact, it’s possible that some beauty products targeted toward communities of color have higher levels of these chemicals, per an August 2018 paper in Environmental Research.

Bottom line? These findings underline a major need for change, which starts with stricter FDA regulations on endocrine-disrupting chemicals. “There needs to be a responsibility on the FDA’s part, without a double standard, to protect our children and every body,” says Dr. Rocco. She adds that while the European Union has banned more than 1,300 harmful chemicals from products, the FDA has only banned 11.

So what can we do to keep kids safe?

According to Dr. Rocco, taking small steps to reduce exposure on a regular basis is the key here. Meaning, you don’t have to toss every product in sight right away. “This isn’t doom and gloom; this is just education to improve family’s lives,” she says.

For starters, Dr. Rocco recommends using fewer products on your children in general. They don’t necessarily need all the products advertised for kids, she adds. You can even make DIY lotions, soaps, and other personal care products, she says. And if you are going to buy products, go back to the basics: organic, non-GMO, and free from fragrances, parabens, sulfate, and phthalates.

If you’re having a hard time figuring out which products are best, Dr. Rocco suggests searching products on one of the following websites:

• EWG Healthy Living (a free app that can help you identify harmful substances in products)
• SkinSAFE (the database used in the study to categorize skin care products, which also has a BabySafe section)
• Skin Deep (a database created by the Environmental Working Group)
• YUKA (a free app that allows you to scan barcodes of products in store)

You can also reach out to your child’s pediatrician if you need skin and hair care product recommendations.

Other ways you can reduce endocrine-disruptor exposure in general include avoiding plastic as much as possible, using stainless steel or glass bottles, using wax paper instead of plastic wrap or sandwich bags, eating more organic fruits and vegetables, getting exercise (which helps you sweat out toxins), and even having houseplants (which can provide more oxygen), Dr. Rocco says.