Lead has been detected in fast-fashion children's clothing at concentrations exceeding US federal regulatory limits, preliminary research revealed. Undergraduate chemists tested 11 brightly coloured shirts sourced from four retailers, finding all samples surpassed the 100 parts-per-million threshold set by the US Consumer Product Safety Commission. Simulated digestion experiments further indicated that routine mouthing behaviour could expose young children to lead quantities above federally recognised safe limits.
- All 11 shirts tested across four fast-fashion and discount retailers exceeded the 100 ppm federal lead limit, regardless of brand or country of origin.
- Brightly coloured garments, particularly red and yellow shirts, recorded higher total lead concentrations than items in muted tones across the sampled range.
- Researchers simulated stomach digestion to estimate lead bioaccessibility, modelling potential exposure from sucking, holding or chewing fabric during normal child behaviour.
- The findings were presented at ACS Spring 2026, drawn from the study 'Lead contamination in fast fashion children's clothing' by researchers at Marian University.
HOW IT WAS TESTED: Researchers employed X-ray fluorescence spectroscopy for initial screening before conducting quantitative analysis via inductively coupled plasma testing. Samples were acid-digested following EPA 3050b protocols, with bioaccessibility testing performed under EPA 1340. Gastric acid was used to estimate lead release during ingestion, and saliva was applied to simulate oral exposure, with all results adjusted for child body weight.
- The project was led by Kamila Deavers, the principal investigator, whose work on heavy-metal exposure risks began after her daughter showed elevated blood lead levels from toy coatings.
- Undergraduate researchers Cristina Avello and Priscila Espinoza, both on pre-medicine tracks, joined the project to examine fast fashion's potential impact on the paediatric population.
- Eleven shirts spanning six colours—red, pink, orange, yellow, grey and blue—were purchased from a mix of fast-fashion and discount retailers for testing.
- Previous studies found elevated lead levels in metal components such as zippers, buttons and snaps, prompting product recalls; lead in fabric textiles has also been reported in adult fast-fashion garments.
- The research was funded by internal grants from the university and Sigma Zeta.
THE HEALTH RISK: Every shirt in the sample exceeded the federal threshold, with vivid-coloured garments consistently recording higher concentrations than muted tones. Lead exposure is considered harmful at any level, potentially causing behaviour problems, brain and central nervous system damage. The US Environmental Protection Agency identifies children under six as the population most at risk.
- Not one of the sampled items met US federal lead regulations, whether it was brightly or mutedly coloured, cheaply or premium priced.
- Red and yellow shirts trended toward higher total lead concentrations than garments in grey or other muted shades across the tested range.
- Gastric simulation modelled the maximum lead bioaccessibility within stomach acid, with findings scaled to a child's weight to estimate real-world ingestion risk.
- Researchers noted that bioaccessibility calculations were likely conservative, yet data suggested frequent chewing over time could raise blood lead levels to a point requiring clinical monitoring.
- Lead(II) acetate, used by some manufacturers as an inexpensive dye-fixing agent to produce bright, long-lasting colour, was identified as the probable source of contamination.
WHAT COMES NEXT: The research team plans to expand shirt sampling and examine the relationship between fabric lead levels and potential child absorption rates. The team also plans to investigate how laundering affects lead(II) acetate, including whether washing contaminated garments could transfer lead to other clothing, how different detergents interact with the compound, and whether lead-containing residue inside washing machines could release contamination into wastewater.
- Researchers identified plant-based natural mordants—including oak bark, pomegranate peel and rosemary—as existing safer alternatives to lead(II) acetate for fixing dyes to fabric.
- Alum was also cited as an environmentally safe mordant capable of maintaining colour vibrancy without introducing heavy-metal contamination into the textile dyeing process.
- The team called for more thorough screening of children's clothing items at point of sale and urged the textile industry to replace lead-based dyeing compounds with cleaner alternatives.
- Without consumer or policy pressure on manufacturers, researchers cautioned, there remains little commercial incentive to adopt cleaner production methods.
