Strontium chloride hexahydrate is used in toothpaste for sensitive teeth, where it blocks dentin tubules to reduce pain transmission from hot, cold, or sweet stimuli. It is commonly employed in pyrotechnics to produce a bright red flame in fireworks and signal flares. As a source of strontium ions, it serves in laboratory settings for chemical synthesis, analytical standards, and studies on metal ion behavior in solutions. It finds applications in phosphor and luminescent materials, particularly in older cathode ray tubes (CRTs) and television screens, enhancing luminescence when excited by electrons. Additionally, it is utilized in radiation detection instruments due to its ability to undergo chemical changes upon radiation exposure. In medical research, strontium compounds like this are investigated for their influence on bone metabolism and potential treatment of osteoporosis.