Finish the IPE with a penetrating oil. We have had good experience using Penofins for hardwoods. When applying, use a brush, rag or sponge. Once applied,, wipe and remove all excess oil. DO NOT over apply as it will become sticky and tacky and my take a very long time to dry. IPE does not soak up the oil like a softwood does. CAUTION: The rags (applicators used) are FLAMMABLE and must be disposed of properly - READ the manufacturer's instructions for disposal.