A material (e.g., solution, spray, gel, oil, balm) intended to be applied to nasal mucosa for one or a variety of therapeutic applications such as providing a protective barrier, hydrating the mucosa, washing/removing excessive secretions, loosening nasal encrustations, and/or reducing mucosal irritation/inflammation/oedema from environmental exposures (e.g., pet allergens, pollen), infection, or postsurgical healing, or for snoring control. It is composed of one or a combination of compounds (e.g., acids, provitamins, mannitol); it does not include an antimicrobial agent(s). It is intended for use in the home or a clinical setting. After application, this device cannot be reused.