Within the Physiological Seawater Nasal Care Spray market taxonomy, types are categorized by osmolarity, buffering, and additive composition, each influencing consumer adoption and pricing tiers. Isotonic (0.9% NaCl) sprays dominate due to their physiological compatibility, serving both therapeutic and prophylactic needs with minimal irritation risk. Hypertonic (1.5–3% NaCl) variants are positioned for patients requiring enhanced decongestion, leveraging osmotic draw to reduce edema, albeit with a higher incidence of transient stinging. Buffered formulations incorporate bicarbonate or phosphate systems to stabilize pH, extending mucosal comfort during prolonged use and attracting a premium segment. Preservative‑free sprays address hypersensitivity concerns, commanding higher margins in clinical settings. Combination sprays integrate mild antiseptics or antihistamines, expanding functional breadth but complicating regulatory pathways. The relative market share of each type reflects clinical guidelines, patient tolerance, and price elasticity, providing a granular view of demand drivers beyond the broader application segmentation.