Design, Development, and Pharmacological Evaluation of a Polyherbal Antimicrobial Hand Wash

Research Article

Abstract

Hand hygiene is one of the primary defense mechanisms against the transmission of infectious pathogens in clinical and community settings. While synthetic hand washes provide effective microbial reduction, their prolonged use is frequently associated with skin irritation, environmental toxicity, and the potential development of antimicrobial resistance. A polyherbal hand wash was developed utilizing the bioactive extracts of Psidium guajava (Guava), Piper betle (Betel), Murraya koenigii (Curry leaves), Ocimum sanctum (Tulasi), and Azadirachta indica (Neem) to provide a safer, biodegradable, and skin-compatible alternative. These botanical agents were integrated into a gel-based system using Sapindus mukorossi (Reetha) as a natural surfactant and Aloe vera as a moisturizing emollient. Four distinct formulations (F1 to F4) were prepared and subjected to physicochemical and pharmacological assessments. Evaluation parameters included organoleptic properties, pH stability, foam height, foam stability, spreadability, and washability. Antimicrobial efficacy was determined using the cup-plate method against diverse microbial populations. Results indicated that all formulations maintained a skin-neutral pH (7.3 to 7.57). Skin safety was evaluated through acute irritancy test in Wistar rats, which showed no clinical signs of irritation, edema, or erythema. Formulation F4, which utilized a synergistic combination of all herbal extracts, showed superior foaming capacity and enhanced antimicrobial activity. The absence of microbial growth in the finished products confirmed the efficacy of the preservative system and the inherent stability of the formulation. The developed polyherbal hand wash is an economically viable, eco-friendly, and effective substitute for synthetic antiseptic cleansers.