Freeze-Drying (Lyophilization): This method involves freezing the organogel and then reducing the surrounding pressure to allow the frozen DMSO to sublimate directly from the solid to the gas phase. Freeze-drying can effectively remove DMSO without applying heat, which is beneficial if the water-soluble substance is heat-sensitive. However, it's important to verify that the gel's structure remains intact during this process.

Thanks for the answer

Dear Abrar

With all due respect, based on experience, DMSO sublimates barely and may even damage the freeze dryer apparatus if it sublimates.