Within the market taxonomy of silicone oil for gypsum, the Types dimension is divided into linear, cyclic, and phenyl‑modified silicone oils, each further classified by viscosity grade—low, medium, and high. Linear silicone oils are prized for their low surface tension and are predominantly used where maximum spreadability is needed, such as in thin‑coated plaster systems. Cyclic silicone oils provide superior thermal stability, making them suitable for high‑temperature curing processes in precast environments. Phenyl‑modified silicone oils deliver enhanced chemical resistance, which is essential for flooring substrates exposed to aggressive cleaning agents. Viscosity levels dictate the dosage and mixing methodology: low‑viscosity grades enable rapid integration at lower dosages, medium grades balance flow and film formation, while high‑viscosity grades are reserved for specialty applications requiring thicker protective films. The relative adoption of each type aligns with the technical demands of the application segments, thereby shaping the overall market composition.