Bondo® Cream Hardener mixes with Bondo® 2-part fillers, putties and glazes to create high-quality, long-lasting repairs. When the filler and hardener are mixed, a chemical reaction occurs to create a mixture that will deliver a strong, lasting repair. Our hardener is smooth and easy to mix. Hardener must be used with Bondo® Fillers and is not designed to use alone.
