Ingredient deep-dive

Carrageenan: Is It a Microplastic?

Not a microplasticCleared / not a microplastic

Not a microplastic. A polysaccharide extracted from red seaweed, used to thicken and gel. Some digestive-inflammation debate exists around the degraded form in food, but it is not a plastic in any sense.

Where it appears

Toothpaste
Natural gels
Plant milks (as a food thickener)

Regulatory status (2026)

European Union

Permitted in cosmetics and food.

United States

Permitted; some debate over degraded forms.

Cleaner alternatives

Xanthan gum if avoiding carrageenan in food

Use the app

Scan any product for Carrageenan in 5 seconds

The MicroPlastics iOS app flags this ingredient and 24 others instantly. Paste a label into the free web ingredient checker first if you want a no-install scan.

Download on the App Store

Carrageenan, common questions

Is Carrageenan a microplastic?

Borderline. Not a microplastic. A polysaccharide extracted from red seaweed, used to thicken and gel. Some digestive-inflammation debate exists around the degraded form in food, but it is not a plastic in any sense.

Is Carrageenan banned?

EU: Permitted in cosmetics and food. US: Permitted; some debate over degraded forms.

What can I use instead of Carrageenan?

Cleaner alternatives include: Xanthan gum if avoiding carrageenan in food.

What products contain Carrageenan?

Commonly found in: Toothpaste; Natural gels; Plant milks (as a food thickener).

Related ingredients

Silica

Cleared / not a microplastic · Not a microplastic

Not a microplastic. Silica is silicon dioxide, a mineral, chemically the same family as sand and glass. It is one of the main materials brands use to REPLACE plastic microbeads for oil absorption and soft focus.

Mica

Cleared / not a microplastic · Not a microplastic

Not a microplastic. Mica is a naturally occurring mineral and the standard non-plastic alternative to polyester glitter. Its genuine issue is ethical rather than chemical: mica mining has documented child-labour problems, so look for responsibly sourced or synthetic fluorphlogopite.

Cellulose

Cleared / not a microplastic · Not a microplastic

Not a microplastic. Cellulose is a plant polymer — the structural material of wood and cotton. It is a polymer, but not a synthetic one, and it biodegrades. Widely used as a plastic-bead replacement.

Jojoba Esters (Jojoba Beads)

Cleared / not a microplastic · Not a microplastic

Not a microplastic, and the single best-known replacement for polyethylene microbeads. Naturally derived wax esters formed into soft spheres that exfoliate and then melt on the skin rather than washing into waterways.