Glyceryl Behenate/Eicosadioate is a multifunctional, oil-gelling ester that serves as a high-performance viscosity modifier and emulsion stabilizer. This ingredient provides a unique, non-greasy skin feel while improving the structural integrity of anhydrous sticks and oil-in-water creams.
- INCI Name:
- Glyceryl Behenate/Eicosadioate
- Chemical/Scientific Name:
- Glycerides, behenate eicosadioate
- Common Aliases:
- Nomcort HK-G, Glyceryl Eicosadioate/Behenate
| Category: | Texture Enhancers |
| Source Origin: | Synthetic or Vegetable-derived |
| Comedogenic Rating: | 0 |
| Primary Industries: | Dermatological Skincare, Color Cosmetics, Sun Care |
| Solubility: | Oil-soluble (Lipophilic) |
At a Glance: Properties & Effects
| Texture Enhancement: | |
| Formula Stability: | |
| Hydration/Moisture: | |
| Irritation Risk: |
- Primary Benefits: Increases oil-phase viscosity, prevents oil “bleeding” in sticks, creates a smooth film on the skin, and stabilizes complex emulsions.
- Potential Risks: None significant; considered a non-sensitizing, inert material.
Biological Action & Cosmetic Profile
Formulations containing this ester benefit from its ability to form a sophisticated three-dimensional network within the oil phase. By gelling various lipids, it effectively traps liquid oils, which prevents phase separation and enhances the thermal stability of the final product. This characteristic is particularly valuable in sunscreens and lip care, where maintaining a consistent distribution of active filters or pigments is critical for efficacy.The molecular structure, derived from Glycerin, Behenic Acid, and eicosanedioic acid, allows it to function as a physical barrier without the occlusive heaviness typically associated with traditional waxes. It imparts a silky, matte-like finish rather than a glossy or sticky residue. Manufacturers often utilize this material to transition a liquid oil into a soft, spreadable gel, improving the user experience during application.Consistency in texture across varying temperatures is a hallmark of this ingredient’s performance. It maintains the hardness of stick products in warm climates while ensuring they do not become excessively brittle in cold environments. Beyond structural benefits, the film-forming properties help to lock in moisture by reducing trans-epidermal water loss (TEWL), although it is not classified as a primary humectant.
Broader Applications & Origins
Dermatologists and cosmetic chemists frequently select this ester for high-SPF sunscreens. Its ability to suspend inorganic filters like Zinc Oxide or Titanium Dioxide ensures an even application, which is vital for achieving the labeled protection factor. In color cosmetics, it serves as a binder that keeps pigments homogenous, preventing streaking or settling in liquid foundations and concealers.
Routine Integration
- Synergies: Performs exceptionally well with Squalane and Caprylic Capric Triglyceride to create elegant, fast-absorbing oil gels. It also complements Dimethicone to enhance skin-slip and long-wear properties.
Clinical Consensus & Safety
The Cosmetic Ingredient Review (CIR) Expert Panel has evaluated the safety of glyceryl esters and concluded they are safe for use in cosmetics at current concentrations. Because this ingredient is composed of fatty acids naturally found in the skin and vegetable oils, it lacks significant allergenic potential. Clinical assessments indicate a very low potential for dermal irritation or sensitization, making it suitable for sensitive skin types and use around the delicate eye area.
Is Glyceryl Behenate/Eicosadioate the same as a wax?
While it functions similarly to a wax by thickening oils, it is technically an ester. It offers better sensory properties than many natural waxes, providing a lighter feel without the “tacky” sensation often found in beeswax or carnauba.
Will this ingredient cause breakouts?
No, this ingredient is considered non-comedogenic. Its structure allows it to provide body to a formula without clogging pores, making it an excellent choice for stabilizing moisturizers designed for oily or acne-prone skin.
Why is it in my waterproof sunscreen?
It is used to improve water resistance by forming a breathable, hydrophobic film on the skin. This ensures the sunscreen remains effective even after exposure to water or sweat.