Vacuum drying is a method used to remove moisture from materials by lowering the pressure around them. This process allows water to evaporate at lower temperatures, which helps preserve the quality of heat-sensitive substances. It is commonly used in industries like food processing, pharmaceuticals, and materials science. In vacuum drying, the material is placed in a sealed chamber where air is removed to create a vacuum. As the pressure decreases, the boiling point of water drops, enabling it to vaporize quickly. This efficient technique minimizes oxidation and degradation, making it ideal for drying delicate products without compromising their integrity.