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Skin Conditioning

4-PCA DIMETHICONE

CAS 179005-03-9
78

Safety score · 0–100

Fine

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

A dimethicone modified with pyrrolidone carboxylic acid (PCA) for added moisture binding. Behaves like other cosmetic silicones — non-irritating on skin, with some environmental concern.

Function

HAIR CONDITIONINGSKIN CONDITIONING - MISCELLANEOUS

Skin benefits

  • Silky skin feel
  • Conditions skin and hair
  • Reduces tackiness in formulas
  • Light moisturisation

Known concerns

  • Silicone — environmental persistence
  • Limited public safety data on this specific PCA-functional silicone

References

EU

EU CosIng database

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

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Same plant / compound family

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4-PCA DIMETHICONE/BIS-VINYLDIMETHICONE CROSSPOLYMER
Film Former

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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.