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POLYGLYCERYL-6 PENTASTEARATE

CAS 99734-30-2
77

Safety score · 0–100

Fine

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

About

A richer emulsifier with five stearic acid chains on a six-unit polyglycerin, excellent for heavy, protective formulations.

Polyglyceryl-6 Pentastearate is the pentaester of polyglycerin-6 with stearic acid, having 5 of 6 possible esterification sites occupied on average. The higher substitution provides stronger emolliency and greater formulation-thickening capacity compared to lower-substituted analogues. Functions as a nonionic emulsifier and skin-conditioning agent. The higher stearic acid content increases the occlusive film on skin, beneficial for dry skin but potentially problematic for oily skin types.

Skin benefits

  • Strong barrier protection
  • Rich emolliency
  • Thickening

Known concerns

  • More occlusive — may feel heavy on oily skin
  • Stearic acid comedogenicity

References

EU

EU CosIng database

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

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