Hydroxylapatite is widely used in biomedical applications due to its biocompatibility and similarity to the mineral component of bones and teeth. It is commonly employed as a coating for dental implants and orthopedic prosthetics to enhance integration with bone tissue. In dentistry, it is used in toothpaste and mouthwash formulations to help remineralize enamel, reduce sensitivity, and prevent tooth decay. Additionally, hydroxylapatite is utilized in bone grafts and scaffolds for tissue engineering, promoting bone regeneration and repair. Research is also exploring its potential as a drug delivery vehicle in controlled release systems. Its ability to adsorb heavy metals makes it useful in environmental applications for water purification and soil remediation.