Sof Sole Mink Oil creates a waterproof barrier to protect leather from the elements. Ideal for use on smooth or grain leather, Mink Oil also conditions as it proofs. To use Mink Oil, apply and work it into leather products. After allowing it a few minutes to absorb, wipe of any excess, and your product is ready to wear or use. For best results, test Mink Oil in an inconspicuous area as it may darken some leathers.