Tung oil tung oil is the only drying oil that will polymerize 100% (completely harden). Linseed oil, for example, never completely hardens. Since tung oil has become popular as an environmentally friendly wood finish, some products labelled as "tung oil" are actually blends containing other oils, varnishes, solvents, or chemical driers, and may even containing no tung oil at all Products labeled "Danish oil" may be tung oil or they may be polymerized linseed oil. The product packaging will usually clearly state if it is pure tung oil. Heating tung oil to about in an oxygen-free environment will substantially increase the viscosity
Jojoba oil and climate in which the plant is grown, as well as when it is harvested and how the oil is processed. In general it contains a high proportion of mono-unsaturated fatty acids, primarily 11-Eicosenoic acid (Gondoic acid). Being derived from a plant that is slow growing and difficult to cultivate, jojoba oil is mainly used for small-scale applications such as pharmaceutical and cosmetics. Overall, it is used as a replacement for whale oil and its derivatives, such as cetyl alcohol. The ban on importing whale oil to the U.S. in 1971 led to the discovery that jojoba oil is "in