Application-based nasal preparations segmentation separates demand into allergic rhinitis, sinusitis, nasal polyps, dry nose, and other therapeutic areas. Allergic rhinitis dominates because of high global sensitization, driving volume for intranasal corticosteroids and antihistamines; the segment contributes roughly 40% of 2023 revenues. Sinusitis therapies—including antibiotics, decongestants, and saline—account for roughly 28%, paced by acute infection episodes and post-surgical care. Nasal polyps, though a smaller pool of patients, generates 18% of sales through high-unit-price corticosteroid sprays and biologics. Dry nose, an under-recognized indication linked to pollution and climate, supplies a 9% share via low-cost saline and lubricant sprays. The residual 5% covers migraine, Parkinson’s, and vaccine delivery, illustrating how formulation versatility expands the addressable market.