Science
Mechanism of Action
As a polysiloxane polymer, Polysilicone-18 Cetyl Phosphate forms a microscopically thin, highly flexible film upon application. This film enhances adhesion and elasticity on the skin, contributing to improved product durability and a degree of waterproofness. It provides a refined, smooth tactile sensation, exhibiting a favorable affinity with the skin and high ductility without leaving a tacky residue. Furthermore, its chemical structure allows it to effectively emulsify, disperse, and solubilize various components within cosmetic formulations, alongside offering antistatic, adsorbing, and lubricating benefits.
Research
Clinical Evidence
Insufficient-data confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
This ingredient is generally reported as stable within cosmetic formulations. While a specific optimal pH range for its stability has not been identified, its solubility in water is influenced by the degree of polymerization of its siloxane component.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has not conducted a specific safety assessment for Polysilicone-18 Cetyl Phosphate. However, related polysilicone compounds, such as Polysilicone-11, are generally regarded as safe for use in cosmetics. Although the raw material in its concentrated liquid form is noted to potentially cause irritation to skin, eyes, and the respiratory system, in finished cosmetic products, it is frequently listed as 'Irritant Free' by prominent safety databases like SkinSAFE, indicating a low risk for irritation in consumer applications.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Polysilicone-18 Cetyl Phosphate is an optional ingredient valued for its film-forming capabilities, imparting a smooth, non-tacky skin feel, and its utility as an effective emulsifying and dispersing agent in formulations.
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