Only Penofin's Hardwood wood stain can penetrate dense hardwoods that need nourishing and stabilizing. This unique formula penetrates deep into the wood fibers and does not create a surface film. Penofin allows wood to breathe, important in working with exotic hardwoods such as mahogany, teak, Ipe, Brazilian Redwood and many other species. Only Penofin Penetrating Oil Finish can meet the needs of hardwood in fiber protection, penetration, stabilizing and nourishing.