Our All Natural Boot Oil is an 8 oz. blend of pine pitch and mink oil that is specifically formulated to condition Red Wing oil-tanned leather. We recommend testing this product on a small, inconspicuous area of your footwear to determine how much it may darken leather before applying it to the entirety of your footwear. Leather maintenance is the most effective way to protect your investment and extend the life of footwear and other leather products.