Cuprinol Ultimate Furniture Oil is a high performance treatment for teak and other hardwood. It has a special formulation that provides longer lasting protection than traditional Teak Oil and works in 3 ways. The waxes increase the water repellence of the wood, protecting it from the weather, while the oils penetrate the wood, replacing the natural oils lost through weathering. The natural clear or lightly tinted colours enhance the grain, pattern and appearance of the wood.