Science
Mechanism of Action
On the skin, OCTOXYNOL-25 functions by significantly reducing the surface tension of substances. This allows for the effective mixing of oil and water, enabling the removal of dirt and impurities. Additionally, it aids in dissolving other ingredients in solvents where they would typically be insoluble, ensuring homogeneous product integrity.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
OCTOXYNOL-25 primarily serves as a functional ingredient (surfactant) rather than an active ingredient, thus the concept of 'dusting' (under-dosing for marketing claims) is not applicable.
The Formula
Formulation
Stability
No specific optimal pH range or extensive stability notes were identified for OCTOXYNOL-25. However, a related octoxynol, Octoxynol-9, was reported to be stable within a pH range of 4.0 to 7.0 when at a 10% concentration in water.
Conflicts
- strong oxidizing agents
- strong reducing agents
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel concluded that long-chain octoxynols, including OCTOXYNOL-25, are 'safe as used' in both rinse-off and leave-on cosmetic products. This comprehensive assessment was reaffirmed in an amended report in 2025. While no specific maximum concentration for OCTOXYNOL-25 itself was established as a safety restriction, the general conclusion specifies safety when the ingredient is formulated to be non-irritating. Octoxynols are commonly used in concentrations from 0.0008% up to 25%, with most applications typically below 5.0%.
Your Skin
Skin Compatibility
Our Assessment
Verdict
OCTOXYNOL-25 is a valuable surfactant, emulsifier, and cleansing agent, deemed 'safe as used' by the CIR when properly formulated, providing essential functional benefits across various cosmetic applications.
Related
Similar Ingredients
Finding similar ingredients…
References
Sources