21. Examples of unsaturated fatty acids are palmitoleic acid, oleic acid, myristoleic acid, linoleic acid , and arachidonic acid. 22. When analysed, it was found to contain a high proportion of unsaturated fatty acids, especially linoleic acid . 23. Certain linoleic acid products have also been proposed to be markers for specific types of oxidative stress. 24. Linoleic acid has a specific role in maintaining the skin water-permeability barrier, probably as constituents of acylglycosylceramides.25. This enzyme participates in linoleic acid metabolism. 26. :: The only known essential fatty acids are alpha-linolenic acid and linoleic acid , neither of which is saturated. 27. It has been claimed that oleic acid has a slight advantage over linoleic acid in reducing plasma glucose. 28. Research points to linoleic acid 's anti-inflammatory, acne reductive, and moisture retentive properties when applied topically on the skin. 29. Linoleic acid has become increasingly popular in the beauty products industry because of its beneficial properties on the skin.30. Oleic and linoleic acids isolated from " C . colocynthis " petroleum ether extracts show larvicidal activity against mosquitoes.