Synergistic Preservative System
A scientifically optimized blend combining the broad-spectrum antimicrobial efficacy of phenoxyethanol with the multifunctional boosting properties of ethylhexylglycerin. This duo enhances preservation performance while improving product sensory profiles and skin compatibility.
CAS No.: Phenoxyethanol [122-99-6] | Ethylhexylglycerin [70445-33-9]
Function:
Preservation Booster: Significantly amplifies antimicrobial efficacy against bacteria, yeast, and fungi.
Skin Conditioner: Imparts smooth, non-sticky texture and enhances spreadability.
Stabilizer: Improves formulation stability across pH (3–12) and high-temperature (up to 120°C) conditions.
Usage:
Skincare (creams, serums, masks)
Haircare (shampoos, conditioners)
Wet wipes & cleansers
Natural/organic formulations
Specification:
Ratio: Typically 1:9 (Ethylhexylglycerin:Phenoxyethanol).
Efficacy: Passes preservative challenge tests (e.g., ISO 11930) at 0.5–1.0% total dosage.
Solubility: Fully miscible in water and oil phases.
Compatibility: Stable in high-surfactant or high-salt systems.
Package: 25kg/drum, 50kg/drum (customizable).
Safety Notes
Safety Profile:
Recognized as low-irritancy at recommended doses (≤1.0% total blend).
Phenoxyethanol: EU limit ≤1.0%; Ethylhexylglycerin: Generally safe ≤1.0%.
Rare sensitization potential: Discontinue use if redness/itching occurs.
Usage Advice:
Sensitive Skin:
Avoid combining with potent actives (e.g., >5% AHAs, retinol) to mitigate irritation risk.
Pair with calming agents (e.g., panthenol, bisabolol).
Oily/Acne-Prone Skin:
Limit dosage to ≤0.8% to prevent comedogenicity concerns.
Leave-on Products:
Optimal range: 0.3–0.8% (e.g., 0.3% for toners, 0.6% for creams).
Rinse-off Products:
Effective at 0.2–0.5%.
Note: Performance varies with formulation pH, microbial load, and ingredient interactions. Always validate via challenge testing.