What does microplastic-free actually mean?

A claim without a single definition

Microplastic-free is not a legally defined term in the United States. There is no federal rule that says what a product must be, contain, or avoid before a brand can print the phrase on packaging. As a result, the same words can describe very different things depending on who is using them.

Some brands use microplastic-free to mean no intentionally added plastic microbeads. Others use it to mean the product contains no plastic ingredients at all. Others apply it to packaging, or to the finished product but not its lid or pump. Without a definition attached, the claim tells a shopper very little on its own.

How certification programs define it

Certification programs solve the definition problem by publishing a standard and reviewing products against it. The definitions vary by program, and the differences matter:

• Intentionally added microplastics. Some programs, particularly in Europe, focus on whether solid plastic particles were deliberately added to a formulation. This approach follows the European Chemicals Agency definition used in EU regulation and is common for liquids such as cosmetics and cleaning products.
• Ingredient screening. Some programs review a product's ingredient list against a database of known microplastic ingredients, which works well for formulated products like personal care items.
• Material review of the finished product. Our program reviews the materials that make up a product's exposed surfaces, the parts that touch skin, mouths, food, or beverages. A product qualifies only if those surfaces are free of plastics and other microplastic-forming materials, with no contamination thresholds and no partial credit.

Each approach answers a different question. A formulation-focused seal tells you nothing about the bottle the formulation is sold in, and a materials-focused seal like ours is designed for durable goods rather than liquids. For a fuller comparison of programs, see Microplastic Certifications.

How to evaluate a microplastic-free claim

Whether you are a shopper or a retail buyer, the same three questions separate a meaningful claim from a marketing phrase:

• Who defined it? A claim backed by a published standard from an independent program means something specific. A claim with no definition attached means whatever the brand wants it to mean.
• What does it cover? The formulation, the exposed surfaces, the packaging, or all of the above. Precise programs state their scope plainly.
• Can you check it? Certification programs list certified products publicly and offer a way to verify individual certificates. Our directory is at Certified Products and any certificate can be checked at Verify a Certificate.

If your brand makes this claim

Under the Federal Trade Commission's Green Guides, environmental marketing claims must be substantiated. An unverified microplastic-free claim carries real risk, and independent certification is one of the cleaner ways to put evidence behind the words. We cover this in detail in Substantiating Microplastic-Free Marketing Claims.