What microbeads were
Microbeads are very small solid plastic particles, usually less than a millimetre across, that were added on purpose to some rinse-off products. They appeared in certain facial scrubs, body washes, toothpastes and cleansers as an exfoliating or polishing ingredient, typically made from polyethylene or similar plastics. Because they were intentionally added, they are called primary microplastics. This distinguishes them from secondary microplastics, which form when larger items such as bottles, bags or fibres break down or shed.
The key problem was the route they took. After use, the beads were rinsed down the drain, and they were small enough that many of them passed through the screens at wastewater treatment works.
Why tiny plastics are hard to remove from water
Treatment plants are designed mainly to remove solids, organic matter and nutrients, and many do capture a large share of small particles in the sludge. But a proportion can still leave with the treated water, and the sludge itself is sometimes spread on land, which may move the particles to soil instead. Researchers have found that treatment works vary in how well they retain microplastics, and exact figures differ between studies and sites, so it is safest to say that removal is partial and not complete.
Once in rivers and seas, small particles are difficult or impossible to retrieve. They are too small to collect with nets or litter clean-ups, they can travel long distances, and plastics generally persist for a very long time rather than breaking down into harmless substances. Microplastics have been found in water, sediment and in many organisms. What is less certain is how much harm they cause at the concentrations found in the environment and how they may affect human health. Research on this is ongoing, and it is reasonable to say the long-term effects are not yet fully understood.
What is well established, and what is not
Reasonably well established:
- Microbeads were used in some personal care products.
- They are small enough to pass through some wastewater treatment.
- Plastic particles of many kinds are now found in aquatic environments around the world.
- Plastics persist in the environment for long periods.
Less certain:
- The exact share of total environmental microplastic that came from microbeads. Most estimates suggest that they were a small portion compared with other sources, such as tyre wear and fibres from textiles, though the numbers vary.
- The precise effects on wildlife and human health at realistic exposure levels.
This is a good reason for not overstating the case. Microbeads were a notable and avoidable source, and they were chosen as a target partly because they were a clear, non-essential use that could be removed from products.
Bans and restrictions
Several countries have restricted microbeads in rinse-off cosmetics and personal care products, including the United States, the United Kingdom, Canada and others, and the European Union has taken action on intentionally added microplastics more broadly. Details differ: the scope, the products covered, the definition of a microbead and the dates all vary by jurisdiction. Some rules cover only rinse-off cosmetics, so leave-on products or non-cosmetic uses may be treated differently. If you want to know the position where you live, check current local regulations, as these rules can change.
Because of these restrictions and voluntary moves by manufacturers, microbeads are much less common in mainstream products in those countries than they once were. In places without bans, or with older stock and imported goods, they may still be found.
Changing what you buy
If you are choosing products today, a few simple checks can help:
- Read the ingredients on scrubs, cleansers and toothpastes. Names that may indicate plastic include polyethylene, polypropylene, polymethyl methacrylate and nylon, although the same names can also describe plastics used for other purposes, so a match is a prompt to look further rather than proof.
- Choose exfoliants that dissolve or are naturally derived, such as ground fruit stones or salts, or use a washcloth or soft brush instead. Some natural scrubs are harsh on skin, so patch-test and avoid overuse.
- Consider whether you need an exfoliating product at all. Gentle cleansing is enough for many people.
- Be wary of vague marketing language. Reading about greenwashing claims and the way eco-label certifications work helps with that.
If you are looking at products more widely, choosing personal care products involves more decisions than plastic ingredients alone. Homemade scrubs are possible, but they are not tested or preserved like commercial products, so keep them out of reach of children, patch-test first, and avoid them on broken or sensitive skin. The same cautions apply to any DIY skincare recipes.
Beyond microbeads
Removing microbeads dealt with one source. Other microplastics come from tyre wear, paint, plastic pellets and fibres shed during laundry. If you want to take further action, reducing microfibre shedding from washing clothes is one practical step, for example by washing full loads at lower temperatures and with fewer cycles, although the effect of any particular method varies. The wider picture of plastic pollution includes all of these sources.
Individual and system change
Microbeads are an example of how system-level decisions can work better than individual vigilance. Most shoppers could not easily identify or avoid every plastic ingredient, so national rules and company changes did more than personal choices. That does not make individual habits pointless. Reading labels, buying fewer products and supporting stronger standards all point in the same direction, but the largest effect comes from regulation and product design.