Science
Mechanism of Action
Oleyl Alcohol primarily functions as an emollient, softening the skin and establishing a protective barrier to minimize moisture loss while enhancing elasticity. It also serves as an emulsifier and co-emulsifier, effectively blending oil and water phases to ensure formulation stability and consistent texture. Its most distinctive mechanism is as a skin penetration enhancer, promoting the transdermal and transfollicular absorption of both water-soluble and oil-soluble compounds by disrupting and disordering the lipid bilayer of the stratum corneum, creating fluid-rich domains that facilitate ingredient permeation.
Research
Clinical Evidence
High confidenceN/A
Key findings
- 01 Demonstrated a significant increase in flux and cumulative permeation of TFB, a pharmaceutical compound, when incorporated into an ointment formulation.
- 02 Effectively promoted the permeation of diclofenac diethylamine (DIC-DEA) through ex vivo human skin models, indicating its enhancer capabilities.
Transparency
Dusting Analysis
Oleyl Alcohol is widely used across a broad concentration range, from less than 0.1% to over 50%, primarily for its emollient, emulsifying, and penetration-enhancing properties. It is not an active ingredient prone to 'dusting' concerns, which typically apply to potent actives with specific efficacy or irritation thresholds at lower concentrations.
The Formula
Formulation
Stability
Oleyl Alcohol exhibits excellent stability under various formulation conditions. Cream formulations containing it have maintained physical stability and pH values between 5.20 and 5.80 for 90 days. It also demonstrated stability in pH-sensitive liposomal formulations at pH 7.4.
Synergies
- Enhances absorption of both water-soluble and oil-soluble active ingredients.
Conflicts
- strong acids
- oxidants
- some rubbers
Safety
Safety Profile
The CIR Expert Panel concluded Oleyl Alcohol is safe for use in cosmetics, reaffirming this in 2004, citing low potential for skin irritation or sensitization in human tests. It is FDA-approved as a multipurpose additive for direct and indirect food use. While mentioned as an emollient by SCCS, no specific SCCS safety opinion or restriction for Oleyl Alcohol itself was found.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Oleyl Alcohol is a valuable multifunctional ingredient, recognized for its emollient properties and its significant ability to enhance the transdermal delivery of other active ingredients, proving beneficial for diverse skin types and various formulation needs.
Related
Similar Ingredients
Finding similar ingredients…