Ceteth-10 is a versatile non-ionic emulsifier and surfactant used to stabilize oil-in-water formulations. It functions by reducing interfacial tension, ensuring a smooth, uniform texture in creams, lotions, and hair care products.
- INCI Name:
- Ceteth-10
- Chemical/Scientific Name:
- Polyoxyethylene (10) cetyl ether
- Common Aliases:
- PEG-10 Cetyl Ether, Polyethylene Glycol (10) Cetyl Ether
| Category: | Emulsifiers |
| Source Origin: | Synthetic (derived from Cetyl Alcohol) |
| Comedogenic Rating: | 3 |
| Primary Industries: | Cosmetics, Personal Care, Pharmaceuticals |
| Solubility: | Soluble in water and alcohol |
At a Glance: Properties & Effects
| Formula Stability | |
| Texture Enhancement | |
| Solubilizing Power | |
| Irritation Risk |
- Primary Benefits:
- Prevents phase separation in oil-in-water emulsions.
- Improves the spreadability and “slip” of topical products.
- Facilitates the incorporation of oil-soluble active ingredients into aqueous bases.
- Potential Risks:
- May be comedogenic for individuals with highly acne-prone skin.
- Potential for mild ocular irritation if used in high concentrations near the eyes.
Biological Action & Cosmetic Profile
Formulators rely on this ethoxylated fatty alcohol to act as a bridge between immiscible liquids. By lowering the surface tension of the Aqua phase, it allows oil droplets to remain suspended uniformly throughout the solution. This mechanism prevents the “creaming” or sedimentation that often compromises the shelf life of luxury emulsions.As a non-ionic surfactant, this molecule carries no electrical charge, making it exceptionally compatible with a wide array of other cosmetic components. Unlike anionic surfactants which can be harsh, it maintains the integrity of the skin barrier while providing cleansing properties in rinse-off products. The specific “10” designation refers to the average number of ethylene oxide units in the chain, which dictates its hydrophilic-lipophilic balance (HLB). With an HLB value of approximately 12.9, it is ideally suited for creating stable oil-in-water systems.Sensory attributes are significantly enhanced by its inclusion in a formula. It contributes to a light, non-greasy skin feel that is often preferred over the heavier textures produced by traditional wax-based emulsifiers. In hair care, it serves as a conditioning agent that helps smooth the cuticle without leaving the heavy residue associated with Stearyl Alcohol blends.
Routine Integration
- Synergies:
- Works optimally alongside co-emulsifiers like Cetearyl Alcohol and Glyceryl Stearate to create robust cream structures.
- Pairs well with humectants such as Glycerin to enhance the moisturizing profile of lotions.
- Effective when combined with silicone derivatives like Dimethicone for superior skin-softening effects.
Clinical Consensus & Safety
The Cosmetic Ingredient Review (CIR) Expert Panel has evaluated this ingredient and concluded it is safe for use in cosmetic formulations under current practices. Because it is an ethoxylated ingredient, manufacturers follow strict purification processes to ensure the absence of 1,4-dioxane and ethylene oxide residues. Clinical data suggests that it is a non-sensitizer, though dermatologists suggest caution for patients with extreme sensitivity or compromised skin barriers, where any surfactant may cause transient redness. Research published in the International Journal of Toxicology supports its use in concentrations up to 5% in leave-on products without significant adverse reactions.
Is Ceteth-10 safe for acne-prone skin?
While it is generally considered safe, it has a moderate comedogenic rating. Individuals with very oily or highly congestion-prone skin should patch test products containing this ingredient, especially if it appears high on the INCI list.
Why is there a number in the name?
The number 10 indicates the degree of ethoxylation. This value determines the molecule’s water solubility; higher numbers generally indicate a more hydrophilic (water-loving) nature, which influences how the ingredient behaves within a formula.
Is this ingredient vegan?
It is typically synthetic or derived from vegetable-sourced fatty alcohols. While usually vegan-friendly, consumers should verify the source origin with the specific brand if they require a strictly plant-based certification.