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BISPHENYLHEXAMETHICONE

CAS 18758-91-3
88

Safety score · 0–100

Good

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

About

A phenyl-substituted silicone polymer that adds shine, smoothness, and film-forming properties to skin and hair care products — similar to dimethicone but with enhanced organic solubility.

Bisphenylhexamethicone is a silicone polymer featuring a central hexamethicone (linear Si-O-Si chain with methyl groups) backbone with phenyl substituents. The phenyl groups increase the refractive index compared to standard silicones, giving it superior shine and glossing properties. It is commonly used in hair serums, lip products, and high-shine skin formulations. The phenyl modification also changes the sensory profile — slightly more substantive and with a different spreadability than dimethicone. High molecular weight ensures no skin penetration. Listed in CosIng with hair and skin conditioning functions.

Skin benefits

  • Adds glossy shine to skin and hair
  • Film-forming — improves product longevity
  • Conditions and smooths skin/hair surface
  • Water-resistant film formation

Known concerns

  • Silicone buildup on hair with repeated use
  • Potential eye irritation if used in eye-area products (occlusive)

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.