Penofin Blue Label is a semi-transparent, penetrating oil finish manufactured to the highest environmental standard. The highest quality Brazilian rosewood oil provides tough, deep-down moisture protection while still allowing the wood to "breathe". There's no surface film to trap moisture, chip or peel. Microscopically fine transoxide pigments inhibit ultraviolet damage and darkening. They add deep, rich color without hiding the natural beauty of the grain. By precisely combining these and other ingredients, we have created a line of transparent oil wood finishes virtually unmatched in durability and beauty.