Polyrizon Ltd was incorporated in Israel in January 2005. The company is a biotechnology company in clinical development that specializes in developing innovative hydrogels provided in the form of nasal sprays and creating a thin hydrogel-based barrier in the nasal cavity that can provide a barrier against viruses and allergens coming into contact with nasal epithelial tissue. The company's proprietary C&C hydrogel technology consists of a mixture of natural building blocks, provided as a nasal spray, and has the potential to serve as a "biological mask" with a thin shielding barrier in the nasal cavity.