OSMO Polyx-Oil (the original Hardwax Oil) is our favorite floor finish and is made from natural oils and waxes. Key ingredients in Hardwax Oil include sunflower, soybean and thistle oil, plus two hard, natural waxes-carnauba and candelilla. A Brazilian palm tree, Copernica cerifera, produces the carnauba in its leaves, berries and stalks. Villagers cut down fronds, dry them for several days, and then beat off the wax. The candelilla comes from the outer coating on a desert shrub, Euphorbia antisyphiliti, that grows in northern Mexico. Farmers boil the leaves and stems with water and acid to release the wax.