Formulations for Vesicular Phospholipid Transepidermal Penetration
33 patents in this list
Updated:
Liposome encapsulation faces distinct technical hurdles in skincare delivery, where particle sizes must remain between 50-200nm to effectively penetrate the stratum corneum while maintaining stability. Current systems achieve encapsulation efficiencies of 40-75% for water-soluble actives, but maintaining structural integrity during storage and application remains challenging, with many formulations showing significant degradation within 6-12 months.
The fundamental challenge lies in balancing membrane fluidity for skin penetration against structural stability needed for shelf-life and active ingredient protection.
This page brings together solutions from recent research—including elastic liposomes with optimized lecithin-polyol ratios, multi-layered structures with targeted charge distributions, ceramide-integrated bilayers, and osmotically controlled release systems. These and other approaches focus on practical formulation strategies that enhance both delivery efficiency and product stability in commercial applications.
1. Elastic Liposomes with Lecithin and Polyol Composition for Enhanced Water-Soluble Penetration
Kolmar Cosmetics Co., Ltd., KOLMAR COSMETICS CO LTD, 2024
Elastic liposomes for skin care that enhance water-soluble penetration through the skin barrier. The liposomes contain a water-soluble active ingredient, such as a whitening agent, which is dispersed within a polyol component and a lecithin component. The lecithin component, particularly hydrogenated lecithin, enhances the liposomes' stability and deformation properties, while the polyol component facilitates water-soluble penetration through the skin barrier. The liposomes can be prepared with specific weight ratios of lecithin to polyol to achieve optimal penetration characteristics.
2. Cosmetic Formulation with Multi-Layered Liposomes Encapsulating TXA-CTAC Complex
FOSUN JINMEI COSMETICS CO LTD, 2024
Cosmetic formulations using advanced liposomal constructs to enhance topical delivery of lipophilic and non-lipophilic actives. The formulations incorporate liposomes encapsulating the TXA-CTAC complex, which is a zwitterionic compound that forms a complex with TXA. The liposomes are produced using a multi-layered structure with a hydrophilic core and an outer surface, maintaining a positive charge despite the complex's negative charge. This formulation enables effective delivery of lipophilic and non-lipophilic actives through controlled release, improved skin hydration, and enhanced skin firming properties.
3. Liposomes with Unsaturated Lecithin for Enhanced Membrane Penetration and Stability
GUANGDONG BAWEI BIOTECHNOLOGY CO LTD, 2023
Liposomes that enhance penetration of oil-soluble plant extracts through their improved membrane properties. The liposomes contain unsaturated lecithin as the lipid component, which enables better solubility and stability of the encapsulated plant extract compared to traditional saturated lecithin-based liposomes. The unsaturated lecithin formulation also enhances the liposome's membrane softness and wrapping activity, allowing the liposomes to penetrate the skin's stratum corneum more effectively. The liposomes' stability in water and skin environment is also improved, making them suitable for cosmetic applications.
4. Anionic Liposomes Incorporating Ceramide Microemulsions and Sodium Acetylated Hyaluronate with Enhanced Stability
NOX BELLCOW COSMETICS CO LTD, 2023
Anionic liposomes with repair properties that enhance skin barrier function and moisturization. The liposomes contain ceramide microemulsions and sodium acetylated hyaluronate, which are incorporated into the liposome structure through a combination of emulsification and microemulsification processes. The liposomes exhibit improved stability compared to conventional liposomes, with fine particle size and minimal particle size change, and demonstrate enhanced skin barrier repair capabilities through their incorporation of ceramide and hyaluronate.
5. Liposomes with Tetraspanin CD63-Integrated Bilayer for Enhanced Transdermal Stability and Delivery
Beijing Wisdom Beauty Technology Co., Ltd., 2023
Liposomes with enhanced transdermal delivery capabilities through the incorporation of tetraspanin CD63. The CD63 protein, which regulates lipid organization and membrane structure, is incorporated into the liposome bilayer to improve the stability and efficacy of liposomes in transdermal delivery systems. By maintaining the structural integrity of the liposome membrane, CD63 enables controlled release of therapeutic agents through the skin's stratum corneum, overcoming the limitations of conventional liposomes.
6. Liposome Composition with Controlled Osmotic Pressure for Sustained Release and Enhanced Penetration
GUANGZHOU JIDA MEISU BIOTECHNOLOGY CO LTD, 2023
Liposomes for cosmetics that achieve sustained release, skin nutrition, and enhanced penetration through controlled osmotic pressure management. The liposomes contain a balanced ratio of hydrogenated lecithin, diol compounds, and liquid oil, with stabilizers and pH regulators added to maintain stability under various conditions. This formulation enables precise control of the osmotic pressure environment within the liposomes, allowing them to maintain their integrity and release active ingredients while maintaining skin health.
7. Liposome Composition with Monolamellar Structure and Enhanced Inclusions Ratio
FUJIFILM CORP, 2023
Liposome-containing composition for cosmetics containing liposomes with high content of monolayer structure, which improves the ratio of liposomes with monolayer structure and enhances the content rate of inclusions. The composition contains liposomes with a monolamellar structure, stearyl glycyrrhetinate, polyoxyethylene phytosol, cholesterol, and lecithin, and includes liposomes with a monolayer structure.
8. Liposomes with Surfactant-Polyol-Co-Emulsifier Composition and Multi-Step Preparation for Enhanced Encapsulation and Nano-Sizing
GUANGZHOU KEYING COSMETICS CO LTD, 2022
Liposomes encapsulating active ingredients for improved skin delivery and stability. The liposomes contain a combination of surfactant, polyol, and co-emulsifier components, with specific ratios optimized for enhanced encapsulation efficiency and controlled release characteristics. The liposomes are prepared through a multi-step process involving emulsification, lipidization, and encapsulation, resulting in nano-sized particles with improved skin penetration and stability compared to conventional liposomes.
9. Liposome Formulation with Phospholipids, Sterols, Polyoxyethylene Phytosterols, and Polyglycerin Fatty Acid Esters
NOEVIR CO LTD, 2022
A stable liposome formulation for skin care products that maintains their encapsulated active ingredients. The formulation comprises liposomes containing phospholipids and sterols, with an additional component of polyoxyethylene phytosterols and polyglycerin fatty acid esters. The formulation is prepared by combining the liposomes with the selected components in a specific ratio, typically between 0.01 to 5% by mass of the liposomes, and then forming the liposomes through high-pressure dispersion. The formulation maintains the liposomes' integrity and encapsulates active ingredients while preventing degradation through controlled dispersion and stabilization.
10. Liposome Complex with High-Content Stabilization of Vitamin F and Ceramide in Lipid Bilayer
AMARANTH CO LTD, 2022
Liposome complex that can stabilize active ingredients such as vitamin F and ceramide are stabilized in a high content in a liposome structure, and a cosmetic composition for skin improvement. The complex comprises a lipid bilayer comprising a lipid, an encapsulated vitamin F and ceramide are stabilized in a high content in a liposome structure, and a cosmetic composition for skin improvement comprising a number of active ingredients such as vitamin F and ceramide.
11. Submicron Liposomes with Specific Lecithin-Cholesterol Composition and Controlled Emulsification Process
GUANGZHOU JIARUI NEW MATERIAL TECH CO LTD, 2022
Submicron liposomes for targeted skin delivery of active ingredients. The liposomes contain a unique composition of lecithin, cholesterol, polyglycerol-3 methyl glucose distearate, methyl glucose sesquistearate, polyol, and oily components, with precise mass ratios. The liposomes are prepared through a controlled emulsification process involving heating and homogenization of the components, followed by high-pressure homogenization to create the final vesicles. These liposomes exhibit enhanced skin penetration compared to conventional liposomes due to their optimized composition and structure.
12. Liposome Composition with Skin-Mimetic Membrane Structure and Specific Lipid Blend
GUANGZHOU WANQIAN VERMICELLI COSMETICS CO LTD, 2022
Long-circulating liposomes that mimic the skin cell membrane structure, providing enhanced moisturizing and protective barrier benefits. The liposomes contain a unique blend of phosphatidylcholine, malto-oligosaccharide glucoside, glycerin, ceramide, sodium hyaluronate, and polysiloxane quaternary ammonium salt-16, which together form a skin-like membrane structure. The formulation is prepared through a specialized process involving precise lipid composition and buffer addition, followed by high-pressure homogenization to produce long-circulating liposomes.
13. Liposome Formulation with Retinol Palmitate, Lecithin, and Hydrogenated Phosphatidylcholine for Enhanced Stability and Penetration
GUANGZHOU ZHONGKANG MEDICINE SCIENCE AND TECH LIMITED CO, 2022
Retinol liposomes that enhance skin penetration and stability through a novel formulation combining retinol palmitate with lecithin, hydrogenated phosphatidylcholine, and a stabilizer. The formulation incorporates a specific ratio of these components, along with an antioxidant and moisturizing agent, to create stable liposomes that maintain retinol activity over time. The liposomes are prepared through a controlled emulsion process that incorporates lecithin and hydrogenated phosphatidylcholine as film-forming agents, while retinol palmitate and stabilizer enhance stability and skin penetration.
14. Liposome Formulation with Hydrophobic Ceramide and Tocopherol Encapsulated in Lipid Bilayer Containing Surfactants
GUANGZHOU ZHONGKANG MEDICINE SCIENCE AND TECH LIMITED CO, 2022
Easily absorbed skin repair liposomes that enhance topical delivery of ceramide and tocopherol. The liposomes contain a hydrophobic ceramide and tocopherol encapsulated in a lipid bilayer, with additional surfactants like octyldodecanol and sunflower seed oil. The formulation combines ceramide NP with DS-CERAMIDE Y30 and DS-Soya HPC90, with hydrogenated phosphatidylcholine and cholesterol. The liposomes achieve improved stability and particle size reduction through enhanced hydrophobic-hydrophilic interactions between the ceramide and surfactants.
15. Cosmetic Base Material with Liposomal Lecithin and Oryzanol Encapsulation in Water-Alcohol Emulsion
SHISEIDO COMPANY LTD, 2022
Cosmetic base material containing lecithin in liposome form, which provides a stable and skin-compatible emulsion for cosmetic preparations. The base material comprises liposomes encapsulating lecithin and oryzanol, with a water-alcohol ratio optimized for stability and skin compatibility. The liposomes maintain their lecithin content while maintaining the aqueous medium, creating a stable emulsion that delivers the lecithin and oryzanol to the skin.
16. Method for Producing Liposomes via Solvent-Free Molecular Clustering and Microfluidization in Carbon Dioxide
BIOBEAUTECH CO LTD, BioViewTech Co., Ltd., 2021
A method for creating stable liposomes through a novel molecular clustering process that eliminates the need for organic solvents. The process involves dissolving a mixture of phospholipids, surfactants, and other components in carbon dioxide gas at low temperatures, forming a molecularly dispersed state. This state is then stabilized by passing the mixture through a microfluidizer to create multi-layered liposomes. The resulting liposomes retain their stability and encapsulation properties, enabling the encapsulation of active ingredients without the need for traditional organic solvents.
17. Cationic Liposomes with Ceramide and Cholesterol for Enhanced Skin Barrier Interaction
COSMAX INC, 2021
Cationic liposomes for enhanced skin absorption that combine the benefits of cationic lipids with the skin's natural barrier function. The liposomes contain a cationic lipid that interacts with the skin's negatively charged surface, while incorporating ceramide and cholesterol components that mimic the skin's natural lipid barrier. This multi-component formulation enables effective delivery of active ingredients through the skin's natural barrier while maintaining biocompatibility and stability.
18. Liposomal Nanoparticles with Cholesterol-Encapsulated Fat-Soluble Compounds and Phospholipid Surfactant Stabilization
KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY, Korea Research Institute of Chemical Technology, 2021
Liposomal nanoparticles encapsulating fat-soluble anti-aging ingredients through a novel surfactant-aided formulation. The nanoparticles achieve enhanced encapsulation efficiency by incorporating cholesterol, which surrounds the encapsulated ingredients and stabilizes the liposomes. The phospholipid surfactant enhances the liposomes' stability and biocompatibility, while the cholesterol-encapsulated ingredients improve skin penetration and delivery. This formulation enables the delivery of poorly soluble anti-aging compounds through the skin, with enhanced solubility and stability compared to conventional formulations.
19. Liposome Compositions with Phospholipid and Edge Activator for Enhanced Skin Penetration of Hydrophilic Bioactives
COSMAX INC, 2021
Liposome-based compositions for delivering skin bioactive substances to improve skin health and beauty. The compositions contain liposomes made with a phospholipid and an edge activator to enhance skin penetration of hydrophilic active ingredients. The liposomes provide stable, effective delivery of skin bioactives like antioxidants, anti-aging compounds, and wrinkle fighters compared to conventional topical applications. This improves skin conditions by addressing issues like aging, damage, and wrinkles.
20. Nano Liposomes with Dual Encapsulation of Hydrophobic and Hydrophilic Cosmetic Actives
WANG HAILONG, Wang Hailong, 2021
Nano liposomes encapsulating cosmetic active ingredients for enhanced skin care delivery. The liposomes contain hydrophobic active ingredients in their lipid bilayer membrane and water-soluble ingredients in their inner aqueous cavity. This dual encapsulation enables controlled release of active ingredients while maintaining stability through lipid bilayer protection. The liposomes can be prepared through a simple mixing process, eliminating the need for complex laboratory equipment and multiple processing steps.
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