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Ingredient deep-dive

Perfluorodecalin: Is It a Microplastic?

High concernPlasticiser / chemical of concern

A PFAS used in some skincare for an occlusive, oxygen-carrying effect. Not a microplastic, but a fluorinated compound from the class defined by extreme environmental persistence.

Where it appears

  • Anti-ageing serums
  • Some "oxygenating" skincare
  • Post-procedure creams

Regulatory status (2026)

European Union

Permitted, but within scope of the proposed universal PFAS restriction.

United States

Restricted in cosmetics by several US states.

Cleaner alternatives

  • Squalane
  • Ceramide-based occlusives
  • Shea butter

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Perfluorodecalin, common questions

Is Perfluorodecalin a microplastic?

Yes. A PFAS used in some skincare for an occlusive, oxygen-carrying effect. Not a microplastic, but a fluorinated compound from the class defined by extreme environmental persistence.

Is Perfluorodecalin banned?

EU: Permitted, but within scope of the proposed universal PFAS restriction. US: Restricted in cosmetics by several US states.

What can I use instead of Perfluorodecalin?

Cleaner alternatives include: Squalane; Ceramide-based occlusives; Shea butter.

What products contain Perfluorodecalin?

Commonly found in: Anti-ageing serums; Some "oxygenating" skincare; Post-procedure creams.

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