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Film Former

OCTADECENE/MA COPOLYMER OCTADODECYL/BETA-SITOSTERYL ESTERS

CAS 1016160-84-1
73

Safety score · 0–100

Fine

Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.

A long-chain olefin/maleic-ester copolymer with octadodecyl and plant-sterol (beta-sitosteryl) side branches — gives a softer, more cosmetic skin feel than plain polymer film. Low penetration; main caveat is microplastic persistence.

Function

FILM FORMING

Skin benefits

  • Long-wear film-former with elegant skin feel
  • Beta-sitosteryl branch adds plant-sterol slip
  • Low dermal penetration (high MW)
  • Useful in colour cosmetics and sunscreens

Known concerns

  • Synthetic polymer — microplastic/persistence concern in wash-off
  • Possible residual maleic anhydride monomer at low ppm

References

EU

EU CosIng database

European Commission cosmetic ingredient registry: regulatory status, restrictions, authorised functions.

Related film formers

Same plant / compound family

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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve, so always read the physical product label and consult a healthcare professional for personal concerns.