Decorative and colorful, glitter has become a festive symbol in makeup, cards, and handmade items. However, this visual appeal hides a concerning environmental impact that could become a threat. What starts as a shiny decoration can end up floating on beaches, seas, and rivers, with harmful effects on ecosystems.
The base material of glitter is PET plastic coated with metallic layers. Its non-biodegradable structure facilitates its fragmentation into micro and nanoplastics, making it one of the most persistent and problematic forms of marine pollution.
Recent studies have revealed that, far from being a passive particle, glitter alters essential natural processes in the ocean. By interacting with minerals present in the water, it promotes the anomalous crystallization of compounds such as calcium carbonate.
This presents a direct threat to marine species that depend on these minerals to form their shells or skeletons. From corals to mollusks, the alteration of their chemical environment can compromise their survival.
More than shine: a profound impact on the ocean
By functioning as a crystallization platform, glitter interferes with biomineralization, a fundamental process for marine life. Crystals quickly form on its surfaces, especially in cracks, accelerating processes that should be natural and controlled.
As these crystals grow, they fracture the glitter into even smaller fragments. These nanoplastics are so tiny that they easily enter marine food chains, affecting everything from plankton to large fish.
This not only alters the biological balance but also the chemical balance. The oceans, regulators of the global climate, could see their role in the carbon cycle compromised if they continue to accumulate waste that transforms mineral formation at a microscopic level.
A global ecological threat disguised as an ornament
The ingestion of microplastics is already a documented phenomenon in numerous marine species. But glitter, due to its composition and reactive behavior, emerges as one of the most insidious contaminants. What seems harmless at a party can have irreversible consequences under the sea.
This finding reopens the debate on the everyday use of highly polluting synthetic materials. Faced with the climate and ecological crisis, reducing the use of glitter and opting for biodegradable alternatives is not a trend: it is an environmental urgency.
Use of glitter. Photo: Unsplash.
Beyond the environment: other risks of using glitter
Frequent use of glitter implies both an ecological threat and risks to human health. Its tiny particles can enter the body through inhalation or contact with mucous membranes, especially in cosmetic products applied near the eyes, nose, or mouth. This can cause irritations, allergic reactions, or respiratory complications in sensitive individuals.
Additionally, constant handling of glitter poses a challenge for cleaning and controlling its dispersion. It easily adheres to clothing, the body, and surfaces, making it difficult to prevent its accumulation in shared spaces like schools, offices, or party venues, causing discomfort and potential cross-contamination.
Lastly, from an economic perspective, the massive use of glitter in events or products implies a high cost in terms of hygiene and waste management. Its disposal is complex, and its presence in wastewater may require costly treatments that end up being borne by public or private institutions.
