It is an inert substance which is not absorbed, and acts by softening the hairball and provide lubrication to assist in passage through the gut.
It is a source of gel-forming soluble fiber, which has the property of increasing viscosity of the digestive content, slowing gastric emptying. Psyllium husk thus promotes the binding of hair to food particles and thereby increases the transfer of gastric hair into the duodenum and enhances its passage through intestine.
It is a source of insoluble and non-fermentable fiber, which has the property of delaying gastric emptying. Cellulose thus leads to binding of single strands of hair to food particles so that more hair is transferred into the duodenum. Furthermore, cellulose enhances the intestinal transit rate of digesta, which in turn promotes the excretion of hairs with the feces.
Omega 6 fatty acids
They are essential fatty acids, which improve skin and coat condition, thus reducing the transepidermal water loss which thereby reduces hair loss and irritation. Consequently, the reduction of hair ingestion if favored.
It is one of the most effective antioxidants for protecting polyunsaturated fatty acids of cell membranes from oxidation. Vitamin E inhibits lipid oxidation by scavenging peroxyl radicals much faster than these radicals can react with fatty acids or proteins from adjacent cell membranes.
It acts as a cofactor of carboxylase synthetase enzymes. This group of enzymes catalyzes the biosynthesis of fatty acids, being this vitamin crucial in the maintenance of the dermal-barrier health.
Highly-bioavailable source of zinc. Numerous reports have linked zinc deficiency to many dermatoses in dogs and cats, since it is needed for wound healing and the replacement of epithelial cells. Moreover, zinc deficiency accelerates the development of clinical signs due to lack of essential fatty acids, because it reduces ∆-6-desaturase enzyme activity. This enzyme is responsible for the synthesis of EPA and DHA from other simpler fatty acids (linoleic and linolenic acid). In turn, zinc also acts as an antioxidant, by being a component of Cu-Zn superoxide dismutase.