A class of chemicals known as phthalates is commonly used to stabilize fragrances and increase the flexibility of plastics. These compounds are found in a wide range of consumer products, including some baby shampoos, lotions, and powders.
A study published in Pediatrics (2008;121(2):e260–e268) examined phthalate exposure in infants and found higher urinary phthalate levels in babies who had been exposed to baby lotion, shampoo, or powder containing these chemicals. The researchers assessed product use through caregiver questionnaires and measured phthalate metabolites in infant urine samples.
Earlier animal studies have shown that certain phthalates act as carcinogens and can cause fetal loss, developmental abnormalities, and reproductive toxicity under experimental conditions. The authors of the Pediatrics study noted that phthalate exposure in infants was both widespread and variable, and that exposure from lotions, powders, and shampoos was significantly associated with increased urinary phthalate concentrations. This association was strongest in younger infants, who may be more vulnerable because of immature metabolic systems and a higher exposure per unit of body surface area.
At the time of publication, manufacturers in the United States were not required to list phthalate content on product labels, making it difficult for parents to determine which products contain these compounds. In contrast, some other countries have restricted or limited phthalate use in children’s products.
From a practical standpoint, infants generally require minimal skin and hair products. Plain water—or very small amounts of simple cleanser when needed—is often sufficient for routine hygiene. Parents who wish to minimize exposure can also look for products specifically labeled “phthalate-free.”
