Polyrizon Ltd. is a development stage biotech company, which engages in the development of nasal hydrogels. The firm is primarily engaged and specializing in the development of medical device hydrogels delivered in the form of nasal sprays, which form a thin hydrogel-based shield containment barrier in the nasal cavity that can provide a barrier against viruses and allergens from contacting the nasal epithelial tissue. Its naturally occurring building blocks, is delivered in the form of nasal sprays, and potentially functions as a biological mask with a thin shield containment barrier in the nasal cavity. The firm is focused not only on the development of intranasal products, but also on commercialization. The firm cooperates with medical specialists and researchers..