PREDULON Highly concentrated detergent/degreaser to be used as pre-treatment before applying DULON 1&2. It removes surface dirt and grease, oil, old wax, and silicon traces and creates the necessary basis for the DULON 1&2 protection system. Also to be used as pre-treatment with other DULON MARINE wax- & polish products. Pre Dulon is the best biodegradable cleaner and degreaser around. It has a unique formula that is different from other cleaners by separating the layers of dirt, grease or old silicon waxes from the surface to be cleaned. Pre Dulon also brings back the original colours of all plastics, rubber or leather parts inside and outside your vessel. Use pre Dulon to ensure you start with a perfectly clean surface, contamination-free. If you apply Dulon Polish and don't use Pre Dulon, traces of old wax polish may get trapped underneath the Dulon membrane. This wax may deteriorate and go yellow under the Dulon membrane, especially carnuba wax. Always use Pre-Dulon to properly clean the surface before polishing!