Providing a sophisticated alternative to synthetic silicones, this plant-derived emollient delivers deep lipid replenishment without a greasy residue. It functions primarily to restore the skin’s natural barrier by mimicking the lipid composition of human sebum.
- INCI Name:
- Hydrogenated Olive Oil Unsaponifiables
- Chemical/Scientific Name:
- Hydrogenated Unsaponifiable Fraction of Olea Europaea Fruit Oil
- Common Aliases:
- Olive Squalane, Hydrogenated Olive Oil Phytosterols
| Category: | Softeners |
| Source Origin: | Plant-derived (Olive) |
| Comedogenic Rating: | 1 |
| Primary Industries: | Skincare, Hair Care, Decorative Cosmetics |
| Solubility: | Lipid-soluble (Oil phase) |
At a Glance: Properties & Effects
| Hydration/Moisture | |
| Barrier Repair | |
| Texture Enhancement | |
| Irritation Risk |
Primary Benefits:
- Mimics skin’s natural lipid mantle to prevent transepidermal water loss (TEWL).
- Provides a silky, non-tacky finish comparable to Dimethicone.
- Enhances the spreadability and absorption of lipid-heavy formulations.
- Offers high oxidative stability, extending the shelf life of natural oils.
Potential Risks:
- Minimal risk; generally non-irritating and non-sensitizing for all skin types.
Biological Action & Cosmetic Profile
Skin barrier integrity relies heavily on a complex lipid matrix, where this plant-derived emollient serves as a biocompatible analog to human sebum. The unsaponifiable fraction of olive oil is naturally rich in phytosterols, Tocopherol, and Squalane. By undergoing a hydrogenation process, these components are stabilized against oxidation, ensuring they do not turn rancid or generate free radicals when exposed to light or air on the skin’s surface.
Molecularly, the high concentration of phytosterols allows the ingredient to integrate into the stratum corneum’s lipid bilayers. These sterols act as “biological glue,” reinforcing the structural framework between skin cells. This reinforcement improves elasticity and reduces the roughness associated with dry, compromised skin. Unlike heavy mineral oils, it exhibits a low molecular weight and high spreadability, which facilitates a “dry touch” finish while maintaining occlusive properties.
Formulation performance is significantly enhanced by the presence of these hydrogenated lipids. In emulsions, they act as texture modifiers that reduce the “soaping effect” (white streaking) often seen in natural creams. By acting as a co-emollient, the ingredient bridges the gap between high-viscosity waxes and light oils, creating a more cohesive and sensorially pleasing application experience.
Broader Applications & Origins
Extraction typically begins with the byproduct of olive oil refining. The “unsaponifiable” portion refers to the parts of the oil that cannot be turned into soap, containing the most bioactive and nutrient-dense molecules. Once isolated, the fraction is hydrogenated—a process that adds hydrogen to unsaturated bonds—transforming liquid fractions into stable, semi-solid or liquid esters that are resistant to the heat and oxygen challenges common in cosmetic manufacturing.
Routine Integration
Synergies:
- Squalane: Works in tandem to provide a comprehensive lipid replenishment profile.
- Glycerin: While the olive lipids lock in moisture, humectants pull water into the deeper layers for dual-action hydration.
- Ceramide Np: Supports the reconstruction of the intercellular cement in dry or aged skin.
Conflicts:
- No known biochemical conflicts; compatible with most active substances including retinoids and acids.
Clinical Consensus & Safety
Dermatological assessments through the Cosmetic Ingredient Review (CIR) Expert Panel categorize olive-derived hydrogenated lipids as safe for cosmetic use. Clinical studies focusing on the unsaponifiable fractions of vegetable oils consistently highlight their lack of sensitization and irritation potential. Furthermore, because the hydrogenation process removes double bonds, the ingredient is significantly less likely to cause the oxidative stress or comedogenicity sometimes associated with raw, unrefined botanical oils.
Is this ingredient a silicone?
No, it is a 100% plant-derived lipid. However, it is often used as a “natural silicone alternative” because it mimics the slippery, silky, and non-greasy texture that synthetic silicones provide in skincare and hair care products.
Will it clog pores?
This ingredient has a very low comedogenic rating. Because it is highly stable and mimics the skin’s natural sebum, it is generally well-tolerated by acne-prone skin and is less likely to oxidize within the pore compared to unrefined olive oil.
Is it suitable for sensitive skin?
Yes. The phytosterols found in the unsaponifiable fraction have known soothing properties that help calm inflammation and reinforce the skin barrier, making it an excellent choice for reactive or eczema-prone skin types.