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PEG/PPG-24/18 BUTYL ETHER DIMETHICONE.

Valuable CAS 67762-87-2 / CLEANSING, HAIR CONDITIONING, HUMECTANT, SURFACTANT - CLEANSING, SURFACTANT - EMULSIFYING

This alkoxylated polysiloxane derivative is a versatile ingredient, offering both hydrophilic and hydrophobic properties to skincare formulations. It functions primarily as an emollient, humectant, and skin conditioning agent, designed to enhance skin texture, provide slip, and maintain optimal hydration.

Summary

emollient skin conditioning agent humectant plasticizer slip modifier emulsifier

Science

Mechanism of Action

PEG/PPG-24/18 Butyl Ether Dimethicone operates by leveraging its amphiphilic structure, comprising hydrophilic (PEG/PPG) and hydrophobic (dimethicone) moieties. Upon application, it forms a smooth, imperceptible film on the skin's surface, which effectively reduces transepidermal water loss, thereby preventing dryness and promoting a soft, supple feel. Furthermore, its inherent slip-modifying properties enhance product spreadability and skin glide.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Both
Optimal pH 3 – 9
0 7 14

Stability

As an alkoxy polysiloxane with a PEG component, this ingredient exhibits solubility in both aqueous solutions and alcohols due to its hydrophilic characteristics. Formulations containing similar dimethicone derivatives demonstrate robust stability across a broad pH spectrum, typically ranging from pH 3 to 9. Optimal stability and performance are generally observed within a pH range of 4-9 or 5-8, alongside good temperature stability.

Conflicts

  • strong acids
  • strong bases
  • strong oxidizers

Safety

Safety Profile

CIR Status
Safe as used
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel has conclusively determined that 'Dimethicone Copolyol,' an umbrella term encompassing PEG/PPG-24/18 Butyl Ether Dimethicone, is safe for use in cosmetics. This finding was initially established in 1982 and subsequently reaffirmed in 2005 and 2014. Clinical investigations have shown that related dimethicone copolyols, even at concentrations of 40% in aqueous solution or when undiluted, did not act as primary skin irritants or sensitizers. While specific maximum concentration data for this exact ingredient in skincare is not provided, related compounds have been used up to 22% in hair conditioners and 15% in eyebrow pencils.

Your Skin

Skin Compatibility

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Low
Comedogenicity Unknown

Our Assessment

Verdict

Valuable

PEG/PPG-24/18 Butyl Ether Dimethicone is a valuable multi-functional ingredient, enhancing skin hydration and feel, improving product texture, and demonstrating broad compatibility across various skin types and formulations.

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