"Herbal Topical Gel - Formulation Approaches, Polymer and Evaluation Parameter: A Review"

The development is associated with increased sebum production, microbial activity, and inflammation. Although several topical treatments are available, interest in herbal ingredients has increased because of their potential skin-related benefits and suitability for topical formulation development. However, its effectiveness as an independent treatment for acne vulgaris remains insufficiently established.This review discusses the potential application of Aloe vera in topical herbal gel formulations intended for acne management, with emphasis on its botanical characteristics, active constituents, and reported biological properties. It also examines the rationale for selecting a gel dosage form, the role of formulation ingredients, and the importance of choosing suitable gelling polymers, humectants, preservatives, and other excipients. Commonly used polymers, including Carbopol, hydroxypropyl methylcellulose, and xanthan gum, are considered in relation to viscosity, spreadability, consistency, and physical stability. Furthermore, general approaches to aloe extraction, ingredient incorporation, gel preparation, and formulation evaluation are discussed.The review highlights the importance of assessing physicochemical properties, pH, homogeneity, microbiological quality, stability, and safety to ensure formulation suitability. Although preliminary and combination-treatment findings provide a basis for further investigation, they do not establish the independent anti-acne efficacy of Aloe vera. Standardization of plant material, reproducible preparation methods, and well-designed experimental and clinical studies are therefore necessary to determine its potential role in acne management.