| http://www.w3.org/ns/prov#value | - l and, in particular, one or more thickeners, such as, for example, silicon dioxide, aluminium silicates, polysaccharides or derivatives thereof, for example hyaluronic acid, xanthan gum or hydroxypropylmethylcellulose, or a polyacrylate from the group consisting of the so-called Carbopols. [0232] Conventional film formers are, for example, hydrocolloids, such as chitosan, microcrystalline chitosa
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