Polymeric nanoparticles, nanospheres and nanocapsules, for cutaneous applications

Area of Science:

• Pharmaceutical Sciences
• Materials Science
• Dermatology

Background:

• Topical formulations are crucial for drug and cosmetic delivery.
• Polymeric nanoparticles offer advanced delivery systems for active ingredients.
• Understanding skin penetration is key for effective topical treatments.

Purpose of the Study:

• To review polymeric nanoparticles (nanospheres and nanocapsules) in pharmaceutical and cosmetic topical products.
• To summarize preparation, characterization, and skin penetration studies of these nanocarriers.
• To highlight the role of nanoparticles in modulating drug activity and release.

Main Methods:

• Literature review of studies on polymeric nanoparticles in topical formulations.
• Analysis of factors influencing skin penetration and transport (e.g., composition, size, encapsulation).
• Examination of nanoparticle characteristics and their impact on drug release and skin adhesion.

Main Results:

• Skin penetration depends on ingredient composition, encapsulation, nanoparticle size, and formulation viscosity.
• Polymeric nanoparticles can modify drug activity, control release rates, and enhance skin adhesion.
• Nanoparticles serve as effective reservoirs for lipophilic drugs in the stratum corneum.

Conclusions:

• Polymeric nanoparticles represent a significant strategy for controlling topical drug permeation.
• These nanocarriers improve the efficacy and residence time of active ingredients in the skin.
• Further research into nanoparticle formulation can optimize topical drug and cosmetic delivery.