Clay Therapy in Wound Healing: A Brief Review of the Literature

Abstract

Clay is ubiquitous, and its hydrous phyllosilicate properties have promoted its use as a traditional wound healing agent in many cultures. Various types of natural clay have been utilized for skin diseases and wound treatments. Therefore, we aimed to study natural and synthetic clay minerals and summarize their applicability in medical settings. A review of prospective studies published since 2008 examining the properties of different forms of natural clay minerals and their therapeutic benefits in wound care was conducted. Studies were obtained using the databases of Google Scholar, PubMed, Web of Science, and HINARI (Health Inter-Network Access to Research Initiative) and searching related journals. The primary outcomes were assessed qualitatively and were categorized by the type of natural clay used. The included papers studied five available types of clay: Chamliyal clay, French green clay, Oregon Mineral Technologies blue clay, Kisameet clay, and various synthetic clays. The studies found how these forms of clay together demonstrate anti-inflammatory and antibacterial properties while promoting fibroblast regeneration and circulation while remaining biocompatible. Clay-based materials may be a potential alternative for conventional dressings for wound healing in resource-limited settings. This review opens doors to expanding clay-based therapies for wound healing.