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Open AccessJournal ArticleDOI

Topical Nano and Microemulsions for Skin Delivery.

TLDR
The mechanism of skin delivery across the stratum corneum and via hair follicles is reviewed and the composition and characterization of ME and NE for topical and transdermal delivery is focused on.
Abstract
Nanosystems such as microemulsions (ME) and nanoemulsions (NE) offer considerable opportunities for targeted drug delivery to and via the skin. ME and NE are stable colloidal systems composed of oil and water, stabilised by a mixture of surfactants and cosurfactants, that have received particular interest as topical skin delivery systems. There is considerable scope to manipulate the formulation components and characteristics to achieve optimal bioavailability and minimal skin irritancy. This includes the incorporation of established chemical penetration enhancers to fluidize the stratum corneum lipid bilayers, thus reducing the primary skin barrier and increasing permeation. This review discusses nanosystems with utility in skin delivery and focuses on the composition and characterization of ME and NE for topical and transdermal delivery. The mechanism of skin delivery across the stratum corneum and via hair follicles is reviewed with particular focus on the influence of formulation.

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Citations
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Journal ArticleDOI

Advances in transdermal insulin delivery.

TL;DR: Different transdermal insulin delivery techniques and their respective advantages and limitations are focused on, including chemical enhancers-promoted, electrically enhanced, mechanical force-triggered, and microneedle-assisted methods.
Journal ArticleDOI

Topical and Transdermal Drug Delivery: From Simple Potions to Smart Technologies.

TL;DR: This overview on skin delivery considers the evolution of the principles of percutaneous ab-sorption and skin products from ancient times to today and the development of technologies to effectively and quantitatively deliver solutes across this barrier to specific target sites in the skin and beyond.
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Nanoemulsion: A Review on Mechanisms for the Transdermal Delivery of Hydrophobic and Hydrophilic Drugs

TL;DR: This review focuses on how NEs mechanistically deliver both lipophilic and hydrophilic drugs through skin layers to reach the blood stream, exerting the desired therapeutic effect.
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Biomedical applications of microemulsion through dermal and transdermal route.

TL;DR: The present review work compiled various attempts made in last 20 years, utilizing the microemulsion for dermal and transdermal delivery of various drugs, and emphasizes the potency of microemulsions for topical and transDermal drug delivery and its effect on drug permeability.
Journal ArticleDOI

Self-assembly of Organic Nanomaterials and Biomaterials: The Bottom-Up Approach for Functional Nanostructures Formation and Advanced Applications.

TL;DR: An organized overview of the self-assembly processes of novel functional platforms for nanomaterials and biomaterials applications is provided, by analyzing the main factors that influence the formation of organic nanostructured systems, while putting into evidence the main challenges, limitations and emerging approaches in the various fields of nanotechology and biotechnology.
References
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Journal ArticleDOI

Solid lipid nanoparticles (SLN) and nanostructured lipid carriers (NLC) in cosmetic and dermatological preparations.

TL;DR: As a novel type of lipid nanoparticles with solid matrix, the nanostructured lipid carriers (NLC) are presented and improvements discussed, for example, increase in loading capacity, physical and chemical long-term stability, triggered release and potentially supersaturated topical formulations.
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Skin penetration enhancers.

TL;DR: It is proposed that overall the effects of CPEs on the skin barrier may best be explained by a Diffusion-Partition-Solubility theory.
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Nanoemulsions versus microemulsions: terminology, differences, and similarities

TL;DR: In this article, the differences and similarities between nanoemulsions and micro-mulsions in terms of their compositions, structure, fabrication, properties, and stability are discussed.
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Ethosomes — novel vesicular carriers for enhanced delivery: characterization and skin penetration properties

TL;DR: Experiments using fluorescent probes and ultracentrifugation showed that the ethosomes had a high entrapment capacity for molecules of various lyophilicities, including testosterone from an ethosomal patch was greater both in vitro and in vivo than from commercially available patches.
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