Science
Mechanism of Action
By leveraging a low dielectric constant and hydrophobic profile, this ingredient solubilizes crystalline molecules that are otherwise difficult to incorporate. It facilitates the transport of these actives through the lipid-rich stratum corneum by reducing molecular resistance during penetration.
Research
Clinical Evidence
Medium confidence5.5%
Key findings
- 01 A Franz in vitro diffusion study utilizing a 5.5% concentration demonstrated that this solvent enabled 77% of Benzoyl Peroxide to penetrate the stratum corneum within 24 hours.
- 02 In Open Epicutaneous Testing at 2.0%, the ingredient was identified as a reference point for materials with weak sensitizing potential.
Transparency
Dusting Analysis
As a functional solvent or fragrance component, it is rarely marketed as a 'hero' ingredient, meaning it is typically included at functional levels rather than for label claims.
The Formula
Formulation
Stability
Prone to oxidation when exposed to light and air, which can lead to the formation of benzoic acid and benzaldehyde. It may also form peroxides over time.
Synergies
- Benzoyl Peroxide
- Lipophilic active ingredients
- Essential oil concentrates
Conflicts
- Strong oxidizing agents
- Strong acids
- UV light exposure
Safety
Safety Profile
Limited to 5% in fragrance compounds per RIFM standards; classified as a GHS Category 2 eye irritant. Formulations should be protected from light to prevent degradation.
Your Skin
Skin Compatibility
Our Assessment
Verdict
An effective delivery vehicle for lipophilic actives, though its potential for irritation and oxidation requires careful formulation and packaging.
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References
Sources