Segmentation by type distinguishes synthetic squalene, plant‑derived (olive‑oil) squalene, and shark‑derived squalene, each presenting distinct cost structures and sustainability profiles. Synthetic squalene, produced via catalytic hydrogenation of terpenes, offers consistent purity and scalability, positioning it as the preferred source for large‑volume vaccine adjuvant manufacturing despite higher capital expenditure. Plant‑derived squalene, extracted from olives, aligns with growing ESG expectations; its market share is expanding as manufacturers seek to mitigate ethical concerns associated with marine sources, though extraction yields remain lower, influencing price premiums. Shark‑derived squalene, historically the most economical, faces declining demand due to regulatory restrictions and consumer backlash over biodiversity impacts. The type classification directly affects total market valuation by dictating raw‑material costs, supply reliability, and compliance requirements, thereby shaping competitive positioning across the pharmaceutical grade landscape.