Abstract
Bentonites and montmorillonites, natural clay minerals originating from volcanic ash, possess unique properties that have traditionally been utilized in industrial applications. Recently, their potential biomedical applications, particularly in dermatology, have garnered significant interest. This review explores the cutaneous benefits of bentonites and montmorillonites, highlighting their anti-inflammatory, wound-healing, oil-absorbing, drug delivery, photoprotective, and anti-aging effects. Evidence from in vitro experiments, animal studies, and preliminary clinical trials demonstrate that these clays can significantly reduce inflammation, accelerate wound healing, absorb excess oil, enhance drug delivery, protect against ultraviolet radiation, and improve skin hydration and elasticity. Larger scale randomized clinical trials (RCTs) are needed to further establish the safety and efficacy of bentonites and montmorillonites. Given the increasing consumer demand for natural ingredients in skincare, bentonites and montmorillonites present a promising area for further research and development in dermatologic applications.
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