Cosmetic science has rapidly evolved with the integration of modern technologies that enhance product safety, efficacy, personalization, and sustainability. Traditional cosmetic formulations are now supported by advanced tools such as artificial intelligence (AI), 3D printing, nanotechnology, big data analytics, biosensors, and Internet of Things (IoT). These technologies enable precise analysis of skin and hair characteristics, facilitate the development of customized formulations, and improve delivery of active ingredients through novel systems like nanocarriers,liposomes,and microencapsulation. AI-driven diagnostics, virtual try-on tools, and digital skin mapping enhance consumer experience while strengthening product design. 3D printing contributes to personalized makeup, facial masks, and innovative packaging, whereas nanotechnology improves stability, penetration, and targeted delivery of cosmetic actives