Science
Mechanism of Action
This ingredient primarily functions as a water-in-oil (W/O) emulsifier, effectively stabilizing immiscible oil and water phases by significantly lowering interfacial tension. On the skin, it acts as a conditioning agent by forming a protective, thin film that mitigates transepidermal water loss. Furthermore, its humectant properties actively attract and bind moisture, contributing to sustained skin hydration and a supple feel. It also contributes to cosmetic formulations as a dispersant, viscosity controller, and general stabilizer.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
As a lipophilic ingredient with a low HLB value (approximately 5.0-5.5), Polyglyceryl-2 Dipolyhydroxystearate excels in stabilizing oil-continuous systems. It demonstrates excellent compatibility with diverse oils and esters, supporting high oil phase percentages, and aids in dispersing powders and lipophilic actives. While generally heat tolerant, it is advisable to avoid temperatures exceeding 80°C during formulation.
Synergies
- High oil fractions
- Powders (pigments, fillers)
- Lipophilic active ingredients
Conflicts
- Retinoids
- AHAs
- BHAs
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel assessed Polyglyceryl-2 Dipolyhydroxystearate, along with other polyglyceryl fatty acid esters, as safe for use in cosmetics in present practices of use and concentration when formulated to be non-irritating. This indicates a low inherent risk of irritation or sensitization.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Polyglyceryl-2 Dipolyhydroxystearate is a highly valuable ingredient for creating stable water-in-oil emulsions while delivering significant moisturizing and skin-conditioning benefits, suitable for diverse skin types.
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