<h2>What it is</h2><p>Microplastics in the context of consumer goods generally refer to intentionally added solid plastic particles. In cosmetics and personal care, these are frequently called microbeads—tiny spheres of plastic used for exfoliation or as texture stabilizers. While the term 'polyethylene' is the most common chemical name found on labels, microplastics can also appear as polypropylene, polyethylene terephthalate (PET), polymethyl methacrylate (PMMA), and nylon. These particles are engineered to be indestructible during use, but their microscopic size means they are not captured by wastewater treatment plants after being rinsed down the drain. While many countries have begun banning microbeads in 'rinse-off' products like face scrubs, they are still widely used in 'leave-on' products such as sunscreens, lipsticks, and liquid foundations to provide a smooth application or a matte finish.</p><h2>Why it matters</h2><p>The primary ethical and environmental concern regarding microplastics is their persistence and bioaccumulation. Once they enter the ocean, they act as 'toxic sponges,' absorbing persistent organic pollutants (POPs) like pesticides and flame retardants from the surrounding water. Because they resemble fish eggs or plankton, they are frequently ingested by marine life. This introduces toxins into the food chain, eventually reaching apex predators and humans. Beyond chemical toxicity, microplastics cause physical harm to organisms, leading to internal blockages and reduced reproductive success. From a social perspective, the prevalence of microplastics creates a massive 'cleanup' burden for global South communities where waste management infrastructure may be limited, despite the plastic pollution often originating from global corporate giants. Unlike organic matter, these particles will remain in the environment for hundreds, if not thousands, of years, making them one of the most significant long-term pollutants of the Anthropocene.</p><h2>Lower-impact alternatives</h2><p>Transitioning away from microplastics is relatively simple for informed consumers, as high-performing natural alternatives are widely available. For exfoliation, look for products using apricot kernels, jojoba esters, salt crystals, sugar, or ground coffee beans. These ingredients provide the same tactile benefits but biodegrade naturally in water systems. For texture and oil absorption in cosmetics, ethical brands utilize silica, cornstarch, rice powder, or kaolin clay instead of synthetic polymers. When shopping, consumers should look for the 'Zero Plastic Inside' certification or use mobile apps specifically designed to scan ingredient lists for hidden polymers. Choosing products in glass or aluminum packaging also reduces the likelihood of 'secondary' microplastics, which result from the breakdown of the plastic container itself over time.</p>
Microplastics
Microplastics are tiny plastic particles under 5mm in size, often used as exfoliants or binders in personal care products. They present a significant environmental risk because they do not biodegrade and easily enter the marine food chain.
Also known as
Common aliases you may spot on a label. Add these to your ingredient blocklist.
Ethical alternatives
Lower-impact substitutes that formulators reach for when replacing microplastics.
Impact notes
Highly persistent environmental pollutant that accumulates in marine life and enters the human food chain.
Sources
Related ingredients
A red pigment made from crushed cochineal insects, used in cosmetics, food and drinks.
A waxy secretion extracted from sheep wool, used in lip balms, creams and industrial products.
Rendered animal fat, common in soap bars, moisturizers and candles.
A protein obtained by boiling animal skin, bones and connective tissue.
Wax produced by honey bees, used in balms, mascaras and polishes.
A structural protein extracted from animal hair, feathers, horns or hooves.