Hydroxy silicone oil is a linear polydimethylsiloxane terminated with reactive hydroxyl groups, serving as a key intermediate for silicone processing. It reacts with crosslinkers and resins, acting as a structure control agent in silicone rubber to fine-tune plasticity and reversion resistance. In textile finishing, it imparts a smooth, soft hand feel. It also functions as a reactive component in water-repellent treatments, release agents, and defoamers. SUNOIT supplies grades with various viscosities and hydroxyl contents, backed by consistent quality and flexible supply to support customer formulation and process optimization.