Sorbitan laurate serves as a non-ionic surfactant and emulsifying agent that bridges the gap between oil and water phases in cosmetic formulas. It is highly valued for its ability to stabilize textures and impart a smooth feel to lotions and creams.
- INCI Name:
- Sorbitan Laurate
- Chemical/Scientific Name:
- Sorbitan, esters, monododecanoate
- Common Aliases:
- Sorbitan Monolaurate, Span 20
| Category: | Emulsifiers |
| Source Origin: | Synthetic or Plant-derived (Coconut/Palm) |
| Comedogenic Rating: | 1-2 |
| Primary Industries: | Cosmetics, Pharmaceuticals, Food |
| Solubility: | Oil-soluble |
At a Glance: Properties & Effects
| Formula Stability | |
| Texture Enhancement | |
| Penetration Enhancement | |
| Irritation Risk |
Primary Benefits:
- Ensures consistent mixing of oil and water phases to prevent formula separation.
- Acts as a mild skin-conditioning agent to improve the tactile profile of skincare products.
- Supports the effective dispersion of pigments and UV filters in sunscreens and makeup.
Potential Risks:
- Generally considered safe, though high concentrations may cause mild ocular irritation if used near the eyes.
- Rare potential for sensitivity in individuals with specific allergies to sorbitan esters.
Biological Action & Cosmetic Profile
Formulators rely on this ingredient primarily as a low HLB (Hydrophilic-Lipophilic Balance) emulsifier, typically around 8.6. Because of this value, it leans toward oil solubility and is exceptionally efficient at creating water-in-oil (W/O) emulsions or acting as a co-emulsifier in oil-in-water (O/W) systems. It works by reducing the interfacial tension between two immiscible liquids, allowing them to form a stable, homogeneous mixture.The molecular structure consists of Sorbitol (a sugar alcohol) and Lauric Acid (a fatty acid). While its main role is structural, it also provides secondary skin-softening benefits. It can subtly alter the skin’s lipid barrier to facilitate the penetration of other active ingredients, making it a common choice in therapeutic topical creams.
Broader Applications & Origins
Industrial production of this compound involves the esterification of Sorbitol with Lauric Acid. These raw materials are frequently derived from renewable vegetable sources such as coconut or palm kernel oil. Beyond skin care, it is used in the food industry as a food additive and in textiles as a fiber lubricant.Cosmetic chemists often pair it with ethoxylated versions of sorbitan esters, such as Polysorbate 20. This combination creates a more robust emulsification system capable of handling various temperatures and pH levels. Its presence is frequently noted in liquid foundations, moisturizing lotions, and cleansing milks where a silky, non-greasy finish is required.
Routine Integration
Synergies:
- Pairs effectively with Polysorbate 20 to create high-stability emulsions.
- Functions well alongside humectants like Glycerin to maintain skin hydration levels.
- Complements emollients like Caprylic Capric Triglyceride to improve product spreadability.
- Works in tandem with fatty acids such as Stearic Acid to build viscosity in creams.
Conflicts:
- No known major contraindications with common skincare actives like Niacinamide or Retinol.
Clinical Consensus & Safety
Current toxicological assessments from the Cosmetic Ingredient Review (CIR) Expert Panel conclude that sorbitan esters, including this specific laurate ester, are safe for use in cosmetic products. Clinical studies indicate that it is non-sensitizing and non-irritating to the skin at concentrations typically used in the industry (usually below 10%). Because it is rapidly metabolized into Sorbitol and Lauric Acid upon ingestion or absorption, it does not pose a systemic toxicity risk.
Is Sorbitan Laurate safe for acne-prone skin?
Yes, it has a low comedogenic rating (typically 1-2), meaning it is unlikely to clog pores or trigger breakouts for most users.
Is this ingredient vegan?
It is generally considered vegan-friendly as most modern suppliers derive the Sorbitol and fatty acids from plant-based sources.
Why is it found in “natural” beauty products?
While the final processing is synthetic, the starting materials are natural fats and sugars, allowing it to meet certain “naturally derived” standards in cosmetic formulation.