Thank you for posting your feedback. We are sorry to hear about your experience using our product. We are not clear regarding your commentary indicting "Used this once, sealed it up, a week later tried again and the entire tube was dried out." When properly sealed/stored between uses, the product will not lose water (dry) as you appear to be indicating. Since you have posted identical reviews on multiple retailer websites, we have responded with an identical reply. Should you have additional questions or wish to discuss this, please feel free to reach out to DAP’s Technical Customer Service Department at 888-327-8477.