UV Protection Oil Clear - exterior wood finishes - Osmo NZ Polyx ...Osmo uv Protection Oils are clear, satin finish, uv rated oils for new timber joinery, pergolas, trellis, timber garden furniture and planter boxes etc. They are not suitable for timber decking. , OSMO Polyx (Hardwax) Oil and other natural wood finishes based on natural oils and waxes. Durable. Stain resistant. High coverage. Osmo penetrates the wood surface, protecting from deep within. Naturally beautiful wood, protected and durable.Osmo NZ.