Sikkens Cetol Marine Marine finish for all types of wood. Unique formula no other product can match for beautiful and durable results. Enhances natural beauty of interior and exterior wood. Protects decks, railings, trim, masts, etc. from the elements. Penetrates into the wood for long-lasting adhesion. Easy to apply and maintain. For gloss finish use Cetol Gloss. Cetol Gloss should not be used alone but should be used always in conjuction with Cetol Marine. Cetol Gloss should not be used as a deck finish as it will become dangerously slippery when wet. Colors: Cetol Marine: Produces an attractive tint to hardwoods. Satin Finish.