Used as a drier in oil-based paints and coatings, zinc diricinoleate accelerates the curing process by promoting the oxidation and polymerization of drying oils. It improves film formation, enhances hardness development, and contributes to better surface durability. Often combined with primary driers like cobalt or manganese, it acts as a secondary drier to balance drying speed and through-dry properties. It is also utilized in printing inks and varnishes for its ability to provide clear, non-discoloring finishes. Due to its low toxicity compared to other metal soaps, it is preferred in applications where food contact or environmental safety is a concern.