Aloe Vera extract (liquid, water soluble) is a skin soothing and hydrating ingredient that contains a lot of lovely things, like polysaccharides, anthraquinones, glycoproteins, phytosterols, and so much more.
Polysaccharides are hydrating, emollient, anti-inflammatory, and create a barrier on our skin, thanks to the wonders of gelling. (Polysaccharides are technically not water soluble, but they form a gel with things when put into water. This is why “insoluble fibre” in our diets is insoluble. It forms a gel in your intestines, which is excreted with things like too much cholesterol.) The main polysaccharide in aloe is acemannan, a derivative of mannose, which is thought to provide a lot of the beneficial features of aloe vera juice or gel. Acemannan is being studied as an immune stimulating and anti-viral polysaccharide.