Thank you for posting your feedback. We are sorry to see your low star review on DAP Dynaflex Ultra-Premium Window Door and Siding Sealant. As is the case with all acrylic-latex (water-based) formulas, they dry solely by the evaporation of water. Thick (deep) applications, applications subject to lower temperatures/higher humidity, damp/wet application surfaces and/or application areas with poor air circulation will dry at significantly slower rates. Because you did not provide any details regarding your application, such as joint dimensions, temperature, humidity, application materials or any information regarding your application technique, it is difficult to provide you with a more detailed reply or any specific product usage guidance in this format. Should you wish to provide this information, so we can better address your concerns and/or to provide a recommendation for a product that better aligns with your needs/preferences, please feel free to contact DAP’s Technical Customer Service Department at 888-327-8477.