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Ingredient deep-dive

Polybutylene Succinate (PBS): Is It a Microplastic?

Medium concernMicroplastic polymer

Biodegradable polyester positioned as a greener microbead replacement. Genuinely degrades faster than polyethylene under the right conditions, but it is still a solid synthetic polymer particle when you use it.

Where it appears

  • "Biodegradable" exfoliant beads
  • Eco-marketed scrubs
  • Compostable packaging

Regulatory status (2026)

European Union

Potentially exempt from the microplastics restriction if it passes biodegradation testing.

United States

No federal restriction.

Cleaner alternatives

  • Jojoba esters
  • Ground apricot kernel
  • Oat or rice powder

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Polybutylene Succinate (PBS), common questions

Is Polybutylene Succinate (PBS) a microplastic?

Yes: it is classified as a synthetic polymer. Biodegradable polyester positioned as a greener microbead replacement. Genuinely degrades faster than polyethylene under the right conditions, but it is still a solid synthetic polymer particle when you use it.

Is Polybutylene Succinate (PBS) banned?

EU: Potentially exempt from the microplastics restriction if it passes biodegradation testing. US: No federal restriction.

What can I use instead of Polybutylene Succinate (PBS)?

Cleaner alternatives include: Jojoba esters; Ground apricot kernel; Oat or rice powder.

What products contain Polybutylene Succinate (PBS)?

Commonly found in: "Biodegradable" exfoliant beads; Eco-marketed scrubs; Compostable packaging.

Related ingredients

Polyethylene

Microplastic polymer · High concern

Solid plastic polymer. The EU restricted intentionally added microplastics in rinse-off cosmetics from October 2023, including polyethylene microbeads.

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Polypropylene

Microplastic polymer · High concern

Solid plastic polymer, often used in scrubs, mascara fibers, and exfoliants.

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Polyethylene Terephthalate (PET)

Microplastic polymer · High concern

The same plastic used in bottles, here as glitter or shimmer in cosmetics.

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Polymethyl Methacrylate (PMMA)

Microplastic polymer · High concern

Solid acrylic plastic used as a microbead filler. Banned in EU rinse-off products since 2023.

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