Octadecenedioic Acid
What is Octadecenedioic Acid?
Octadecenedioic acid is a synthetic long-chain dicarboxylic acid featuring 18 carbon atoms with a single double bond, typically produced through the oxidative cleavage of unsaturated fatty acids such as oleic acid. In cosmetics, it belongs to the surfactant category, specifically functioning as an emulsifying agent. It works by lowering the surface tension at the interface between oil and water phases, forming a stable film that prevents separation. This property is essential in formulating oil-in-water emulsions like moisturizers, lotions, and cleansers, ensuring uniform distribution of ingredients and a consistent, non-separating product texture. Its mild nature makes it suitable for everyday skincare products, contributing to spreadability without adding greasiness.
Roles in Formulation
This ingredient serves the following purposes in cosmetic formulations:
Benefits
Stabilizes emulsions for consistent product texture in lotions and creams.
Promotes smooth blending of ingredients, enhancing application feel.
Supports non-comedogenic formulations suitable for daily use.
Who It's For
A quick guide for who this ingredient may suit (and who should be cautious).
| Who May Benefit | Who Should Avoid |
|---|---|
| Individuals preferring lightweight, stable moisturizers. | Those with known allergies to dicarboxylic acids. |
| People with oily or combination skin seeking non-pore-clogging options. | People experiencing irritation from similar surfactants. |
| Users of emulsified cleansers and creams for even coverage. | Individuals without patch testing new products. |
Safety Notes
- Considered low hazard in cosmetic concentrations by safety assessments.
- Non-comedogenic, unlikely to clog pores based on ratings.
Frequently Asked Questions about Octadecenedioic Acid
What does octadecenedioic acid do in products?
It emulsifies oil and water phases, creating stable lotions, creams, and cleansers with even texture.
Is it suitable for sensitive skin?
Its low hazard profile suggests compatibility, but patch test recommended.
Does it clog pores?
Rated non-comedogenic, making it appropriate for acne-prone skin.