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Assessing the ecotoxicological effects of novel cellulose nanocrystalline glitter compared to conventional polyethylene terephthalate glitter: Toxicity to springtails (Folsomia candida)
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Researchers compared the ecological effects of conventional plastic glitter made from polyethylene terephthalate with a newer cellulose-based alternative on soil-dwelling springtails. They found that both types of glitter had minimal toxic effects at the concentrations tested, though the conventional glitter showed some impact on reproduction at high doses. The findings suggest that cellulose-based glitter may be a safer, more sustainable replacement for traditional plastic glitter.
Glitter is a type of microplastic, and thus there is a need to assess its potential impacts on the environment and to assess the potential for non-plastic cellulose nanocrystal structurally colored glitters as safe and sustainable replacements. The ecotoxicity of glitter has been mostly ignored in the research literature, with only a few published studies focusing on aquatic organisms. Therefore, an exposure experiment was conducted to examine the impact of conventional polyethylene terephthalate (PET) glitter as well as untreated and heat-treated cellulose nanocrystal (CNC) based glitter on the survival, reproduction, and length of Folsomia candida (springtail). Folsomia candida reproduction was reduced by 61% (P = 0.013) after exposure to PET glitter at 1000 mg/kg, while no significant effects were observed on F. candida survival and length. In contrast, there were no significant impacts on F. candida survival, length, or reproduction when exposed to untreated or heat-treated CNC glitter. These results indicate that exposure to PET glitter may impact soil invertebrates at the population level, and that CNC glitter has potential as a biodegradable non-plastic alternative to PET glitter to decrease detrimental effects on soil ecosystems.
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All that glitters is litter? Ecological impacts of conventional versus biodegradable glitter in a freshwater habitat.
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A mesocosm experiment compared the effects of conventional PET glitter versus biodegradable alternatives (including modified cellulose and mica) on freshwater ecosystems, finding no significant effect on biodiversity but a reduction in algae photosynthesis from conventional glitter. The results suggest biodegradable glitter alternatives may be less harmful, though the effects of both types at higher concentrations or over longer periods remain unclear.
Ecotoxicological Effects of Conventional and Eco-Friendly Glitter: A Literature Review
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This review pulls together 15 studies on glitter—both regular plastic glitter and newer "eco-friendly" versions made from materials like cellulose—and finds that both types can harm aquatic and soil organisms, causing problems like stunted growth, stress, and reduced reproduction. Notably, "biodegradable" glitter isn't automatically safer for the environment, and scientists still don't know enough about how these particles affect ecosystems over the long term or what this means for human exposure. The takeaway: that cute glitter on your face or crafts may be a bigger environmental concern than it seems, even the "green" alternatives.
Physical and chemical impacts of conventional plastic versus biodegradable glitters on freshwater primary producers
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Researchers compared the effects of conventional PET glitter and two types of biodegradable glitter on algae, separating the physical presence of the particles from the chemical effects of what leaches into the water. While conventional plastic glitter caused physical harm, both types of glitter released leachates that affected algal physiology. The study shows that replacing traditional microplastics with biodegradable alternatives does not necessarily eliminate all environmental risks.
Physical and chemical effects of conventional microplastic glitter versus alternative glitter particles on a freshwater plant (Lemnaceae: Lemna minor)
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Researchers compared the physical and chemical effects of conventional plastic glitter versus alternative biodegradable glitter on the freshwater plant Lemna minor, finding that both types can alter plant physiology through their physical presence and chemical leachates.
Multigenerational toxicity of microplastics derived from two types of agricultural mulching films to Folsomia candida
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This study tested whether microplastics from agricultural plastic mulch films affected springtail reproduction over five generations. Surprisingly, neither biodegradable nor conventional plastic microplastics caused significant harm to survival or reproduction at environmentally relevant levels. While reassuring for soil invertebrates, the study only looked at one species, and other organisms may respond differently to these common agricultural contaminants.
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