Product Type market taxonomy for Liquid Rhinoplasty differentiates fillers by residence time, viscoelasticity and regulatory label. CaHA (calcium hydroxylapatite) holds ~46 % share; its high G’ modulus provides structural lift while neocollagenesis extends longevity to 12–18 months, offsetting premium ASPs. Hyaluronic acid accounts for ~39 %, favored for reversible, low-swelling outcomes; cross-linking technologies (e.g., Vycell) now push duration toward 9–12 months, narrowing the performance gap with CaHA. PLLA (poly-L-lactic acid) comprises ~11 %, chosen when gradual volumization (2–3 sessions) is preferred over immediate correction. Autologous fat and PMMA microspheres collectively occupy <4 %; fat appeals to patients desiring biologics, but unpredictable resorption limits repeat usage, whereas off-label PMMA offers quasi-permanence yet carries higher nodule risk, restricting adoption to experienced injectors.