100% pure Birch Bark Oil made with care from a combination of river birch and white birch on our land at 4 Directions Bushcraft. In this form it is ready to be used as an oil to protect tools and knives, mosquito repellant, candle making, leather work and so on. The oil can also be refined even more to make Birch Bark Tar which has been used for thousands of years to repair boots and pots, hafting arrows or knifes, used as crayons and even useful as chewing gum. The oil is offered in 1oz. containers.