When tasted, astringents induce a dry mouth and contraction of the mucous membranes. It can be used to decrease diarrhea and bleeding. Astringents contain tannins, which shrink tissues by acting on epithelial cells and glandular structures, causing a restraint of secretions, and precipitate proteins, causing deposition of a slimy protective layer of albumen tannate over injured areas. This protective effect accelerates wound healing, and this is why astringents are often called “Nature’s Band-Aid.” 🩹
