Advances in Characterization of Transdermal and Topical Products using Texture Analyzer Systems

Area of Science:

• Pharmaceutical Sciences
• Materials Science
• Biomedical Engineering

Background:

• Transdermal and topical products (TTPs) require consistent quality for consumer acceptance and compliance.
• Texture analysis is vital for assessing physical properties and structural integrity of TTPs throughout development and distribution.
• Texture Profile Analysis (TPA) offers insights into semisolid formulation characteristics like spreadability and adhesion.

Purpose of the Study:

• To review the application of texture analyzers in measuring textural properties of pharmaceutical TTPs.
• To highlight emerging trends and methodologies in texture analysis for TTPs and novel drug delivery platforms.
• To emphasize the role of texture analysis in characterizing critical quality attributes (CQAs) for enhanced product development.

Main Methods:

• Utilizing texture analyzers for Texture Profile Analysis (TPA) to assess parameters like hardness, adhesiveness, and cohesiveness.
• Employing in vitro tests such as peel, tack, and shear tests for transdermal delivery systems (TDS) adhesion assessment.
• Characterizing mechanical properties of microneedles (µNDs) including hardness, flexibility, and puncture strength via texture analysis.

Main Results:

• Texture analyzers provide standardized and reproducible in vitro evaluations, complementing subjective in vivo assessments.
• Adhesion in TDS can be reliably quantified using texture analyzer-based in vitro methods.
• Texture analysis is essential for evaluating the mechanical integrity and performance of microneedle (µND) drug delivery systems.

Conclusions:

• Texture analysis is indispensable for optimizing the design and ensuring the quality of pharmaceutical TTPs, including TDS and µNDs.
• Characterizing CQAs through texture analysis contributes to the development of safer and more effective transdermal systems.
• Advancements in automation and multimodal analysis enhance the precision and applicability of texture analysis in pharmaceutical product development.