Skip to content

BIS-PEG-18 DISILOXANE

83

Safety score · 0–100

Good

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

A PEG-modified siloxane that combines the smooth, spreadable feel of silicone with the humectant hydration properties of polyethylene glycol — creating a water-soluble silicone conditioner.

Bis-PEG-18 Disiloxane is a disiloxane (two silicon atoms) backbone end-blocked with an average of 18 moles of ethylene oxide per terminal group. This structure gives the molecule both silicone-like sensory properties (smooth, silky spread, non-greasy) and water solubility due to the extensive PEG chains. PEG-modified silicones are used as conditioners, emulsifiers, and skin-feel modifiers in skin care, hair care, and color cosmetic products. They are generally well-tolerated and do not have the occlusive or comedogenic tendencies of pure dimethicone fluids. No EU restrictions.

Skin benefits

  • Conditions skin — provides silky, smooth feel
  • Water-soluble — washes off easily
  • Improves product spreadability
  • Non-occlusive — comfortable for daily use

Known concerns

  • PEG component may carry 1,4-dioxane contamination risk (low in modern manufacturing)
  • Silicone component may build up on hair with repeated use

References

EU

EU CosIng database

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

Check your shelf

Find BIS-PEG-18 DISILOXANE in your products.

Scan any cosmetic product with LuxSense to see if it contains BIS-PEG-18 DISILOXANE and get a full ingredient breakdown with safety scores.

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.