Nasal Decongestant segmentation by application reveals distinct usage patterns. The market is primarily driven by allergy management, accounting for 45% of demand, as seasonal and perennial allergies remain prevalent. Upper respiratory infections (URIs), such as the common cold, contribute 30%, reflecting chronic usage among individuals with recurrent viral infections. Chronic nasal conditions, including sinusitis and nasal polyps, represent 15%, supported by long-term treatment protocols. The remaining 10% includes postoperative care and occupational allergy mitigation. These applications collectively shape the market size, with geographic prevalence of allergic and respiratory diseases influencing regional growth. Allergy management remains the most dynamic segment, while URIs stabilize market growth through consistent, short-term consumption.