The use of nasal irrigation of up to 50 degrees Celsius have been shown to be safe on the epithelium of rabbit nasal mucosa studied in-vitro.10 In addition, studies have shown that irrigation of the human nasal mucosa with temperatures of up to 50 degrees Celsius did not result in any complications.11,12 Hot saline irrigation has been widely used for skull base and endoscopic sinus surgery for many years with no known reported complication in the English literature.