Short hydroxy purified multi-walled carbon nanotubes are widely utilized in various advanced applications due to their unique structural and functional properties. In the field of materials science, they are incorporated into composites to enhance mechanical strength, electrical conductivity, and thermal stability, making them ideal for use in aerospace, automotive, and construction industries. In electronics, these nanotubes are employed in the development of high-performance sensors, transistors, and conductive films, offering improved sensitivity and efficiency. Their high surface area and excellent electrical properties also make them suitable for energy storage devices, such as supercapacitors and lithium-ion batteries, where they enhance charge storage and transfer capabilities. In biomedical applications, short hydroxy purified multi-walled carbon nanotubes are explored for drug delivery systems, leveraging their ability to functionalize with therapeutic agents and target specific cells or tissues. They are also investigated for use in tissue engineering scaffolds, promoting cell growth and regeneration due to their biocompatibility and structural mimicry of natural extracellular matrices. Additionally, their use in environmental applications includes water purification and pollutant detection, where their adsorption properties and high reactivity are harnessed to remove contaminants and detect harmful substances with high precision.