Science
Mechanism of Action
This intelligent complexing agent operates through a host-guest mechanism, leveraging its hydrophilic exterior and a lipophilic internal cavity to selectively encapsulate hydrophobic molecules like sensitive actives or fragrances. This micro-encapsulation strategy achieves multiple benefits: it significantly boosts the aqueous solubility and bioavailability of poorly soluble compounds (e.g., retinol, certain vitamins), extends product shelf life by protecting embedded ingredients from oxidation, heat, and light, and provides a sustained, controlled release profile. Furthermore, it effectively neutralizes unwanted odors and can mitigate potential skin irritation caused by potent ingredients, making formulations more user-friendly and effective.
Research
Clinical Evidence
Medium confidenceEvidence suggests that concentrations exceeding 8% (w/v) are effective for significantly solubilizing poorly soluble compounds in aqueous mediums, thereby enhancing their potential permeation.
Key findings
- 01 In vitro studies utilizing hairless mouse skin demonstrated that Maltosyl Cyclodextrin at concentrations above 8% (w/v) transitioned poorly soluble hydrocortisone from a suspension to a solution, indicating its potent solubilizing capability crucial for enhanced permeation.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Maltosyl Cyclodextrin exhibits robust chemical stability, particularly under basic conditions, due to the absence of a reducing end. However, its glycosidic bonds are susceptible to hydrolysis in strongly acidic environments, specifically at concentrations exceeding 0.01N of strong acids like HCl, H2SO4, or HClO4. The stability of its inclusion complexes can also be pH-dependent, with a general optimal pH range of 5 to 8 recommended for overall stability.
Synergies
- Optimizes the efficacy and stability of sensitive active ingredients such as retinol, various vitamins, and plant extracts by improving their solubility and protecting them from degradation.
- Enhances the delivery of hydrophobic actives, potentially increasing their bioavailability.
Conflicts
- Strongly acidic solutions (e.g., > 0.01N HCl, H2SO4, HClO4) can lead to the cleavage of glycosidic bonds, compromising its structural integrity and complexing ability.
Safety
Safety Profile
While Maltosyl Cyclodextrin itself has not been individually assessed by the Cosmetic Ingredient Review (CIR) Expert Panel, related cyclodextrins (alpha-, beta-, and gamma-CDs, and common derivatives) have been endorsed as safe for cosmetic use, demonstrating a wide margin of safety in dermal applications. A Safety Data Sheet indicates no classification as hazardous under the Globally Harmonized System (GHS). Furthermore, related compounds like Maltodextrin and Beta-cyclodextrin hold Generally Recognized As Safe (GRAS) status with the FDA for food and flavoring applications, respectively, suggesting a favorable safety profile for topical cosmetic use.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Maltosyl Cyclodextrin is a valuable ingredient for precision skincare, expertly enhancing the stability, solubility, and controlled delivery of sensitive or poorly soluble active compounds while also mitigating potential irritation.
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