Barrel & Oak Natural Fragrance Cologne Black OakBarrel and Oak Black Oak cologne is a natural, essential oil based fragrance composed of earthy warm oak and spicy bergamot to awaken your inner outdoorsman. Natural colognes like Black Oak are more subtle than their synthetic counterparts. This makes for an intimate experience. Black Oak is a rich union includes leather, clove, and smoky vanilla. When blended with the wearer's natural chemistry, Black Oak is unique to every man. One or two sprays in