Nanodiamond is widely used in advanced industrial and biomedical applications due to its unique combination of hardness, chemical stability, and surface functionalization potential. In industrial settings, it serves as a high-performance lubricant additive, reducing friction and wear in mechanical systems. It is also employed in precision polishing compounds for optics, semiconductors, and hard disk surfaces, offering ultra-smooth finishes. Additionally, it reinforces composites like plastics, metals, and coatings to enhance scratch resistance and durability.

In biomedicine, nanodiamond is used as a carrier for drug delivery, especially in targeted cancer therapies, where it helps improve solubility and controlled release of chemotherapeutic agents. Its biocompatibility and low toxicity make it suitable for imaging, diagnostics, and tissue engineering applications.

In cosmetics, nanodiamond is explored in formulations for detoxifying and skin-brightening effects, including creams and hair care products that exfoliate dead skin cells, enhance skin clarity, and improve penetration of active ingredients.

In emerging technologies, nanodiamond with nitrogen-vacancy centers is used in quantum sensing, magnetic imaging, electronics, sensors, and next-generation computing due to its optical and electronic properties.