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Related Concept Videos

Micelles01:30

Micelles

Micelle formation is an intricate process that hinges on the properties of amphiphilic or amphipathic molecules and the conditions of the system in which they are found. Amphiphilic molecules, which have both hydrophilic (water-attracting) and hydrophobic (water-repelling) parts, play a critical role in this process.In aqueous environments, these molecules arrange themselves such that their hydrophilic heads are turned towards the water phase, while their hydrophobic tails are oriented away...

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Extraction of Plant-based Capsules for Microencapsulation Applications
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Silica-based microencapsulation used in topical dermatologic applications.

Lawrence J Green1, Neal D Bhatia2, Ofer Toledano3

  • 1George Washington University School of Medicine, Washington, DC, USA. drgreen@aederm.com.

Archives of Dermatological Research
|October 4, 2023
PubMed
Summary
This summary is machine-generated.

Silica microencapsulation enhances topical drug stability and delivery for acne and rosacea treatments. This technology protects active ingredients, improving formulation effectiveness and skin compatibility.

Keywords:
Amorphous silicaDermatologic agentsDermatological agentsMicroencapsulationSilicon compounds

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Area of Science:

  • Pharmaceutical Technology
  • Dermatology
  • Materials Science

Background:

  • Microencapsulation technology, developed in the 1940s, is widely used in chemical, food, and pharmaceutical industries.
  • Topical products often contain active ingredients prone to degradation upon skin contact.
  • Silica microencapsulation embeds substances in a silica matrix to improve stability and control skin delivery.

Purpose of the Study:

  • To highlight the application of silica microencapsulation in novel topical therapies.
  • To demonstrate the improvement of active ingredient stability and formulation compatibility.
  • To review FDA-approved formulations utilizing amorphous silica sol-gel technology.

Main Methods:

  • Utilizing amorphous silica sol-gel microencapsulation technology.
  • Developing controlled vehicle delivery systems for topical applications.
  • Formulating topical creams with silica microencapsulated active ingredients.

Main Results:

  • Two new topical therapies for acne and rosacea have been approved by the FDA.
  • A silica-based formulation combines benzoyl peroxide (BPO) and tretinoin for acne treatment.
  • A second formulation uses silica microencapsulated BPO for rosacea treatment.
  • The technology enhances stability and skin compatibility of active ingredients.

Conclusions:

  • Amorphous silica is recognized as a safe excipient by the FDA.
  • Silica microencapsulation offers a viable solution for stabilizing and delivering sensitive active ingredients in topical formulations.
  • This technology improves the efficacy and tolerability of treatments for acne vulgaris and rosacea.