The Types classification categorizes dermal fillers by their chemical composition and longevity, comprising four sub‑types: Hyaluronic Acid (HA) Fillers, Calcium Hydroxylapatite (CaHA) Fillers, Poly‑L‑lactic Acid (PLLA) Fillers, and Polymethylmethacrylate (PMMA) Fillers. HA fillers dominate the market because of their reversibility, safety profile, and suitability for both superficial and deep injections, directly influencing market volume. CaHA fillers provide higher G' (elastic modulus) for structural support, attracting practitioners focused on deep volume restoration, thereby adding a premium segment to the market. PLLA fillers stimulate collagen over months, positioning them in the long‑term rejuvenation niche and contributing to sustained revenue through multiple treatment cycles. PMMA fillers, being permanent, serve a specialized cohort seeking lasting results, albeit with a smaller market share due to higher regulatory scrutiny. The aggregation of these types defines the market taxonomy and determines the overall market size through differentiated pricing and usage patterns.