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CAPRYLYL GLYCERYL ETHER.

Valuable CAS 10438-94-5 / CLEANSING, SURFACTANT - CLEANSING, SURFACTANT - FOAM BOOSTING

A multifunctional amphiphilic molecule that serves as both a high-performance emollient and a potent antimicrobial booster. It bridges the gap between skincare and formulation science by improving skin hydration while simultaneously stabilizing complex emulsions.

Emollient Humectant Preservative Booster Surfactant Pigment Wetting Agent

Science

As a dual-natured molecule, it integrates into the skin's surface to form a breathable, permeable film that locks in moisture as a humectant. Structurally, it reduces the surface tension of microorganism cell membranes, which destabilizes microbial defenses and significantly increases the penetration efficiency of traditional preservative systems.


Research

High confidence
Effective range 0.3–1%
Optimal

0.6%

Key findings

  1. 01 Challenge tests at 0.6% concentration demonstrated a >3-log reduction in bacteria and yeast counts within a 7-day period.
  2. 02 Research indicates that concentrations between 0.3% and 1.0% act as a synergistic booster, significantly enhancing the efficacy of phenoxyethanol and organic acids.

Transparency

Not commonly dusted
Min. effective
0.3%
Red flag below
0.1%

Because this ingredient is primarily utilized for its functional preservative-boosting and surfactant properties, it is rarely 'dusted' for marketing. However, concentrations below 0.3% may fail to provide the necessary antimicrobial synergy required for robust formulation protection.


The Formula

Solubility
Both
Optimal pH 2 – 12
0 7 14

Stability

Exhibits exceptional thermal stability and remains active across an expansive pH range. While it has limited standalone water solubility (0.25%), it easily forms clear systems when coupled with 2-15% glycols like propanediol.

Synergies

  • Phenoxyethanol
  • Parabens
  • Propanediol
  • Butylene Glycol
  • Organic Acids

Conflicts

  • Concentrations exceeding 35% in concentrated raw material blends may lead to precipitation or solidification.

Safety

CIR Status
Safe as used
Max tested
1%
Pregnancy
Safe
Sensitization risk Low

The CIR Expert Panel confirmed the safety of alkyl glyceryl ethers; while related compounds are used up to 8% in rinse-off products, 1.0% remains the industry standard for leave-on efficacy and safety.


Your Skin

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

Our Assessment

Valuable

An essential multifunctional additive for precision formulations, providing critical antimicrobial support and skin-softening benefits without irritation.


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