Lee, Y.H., Kim, J.E. and Lee, H.T. 2025. Evaluation of the grip strength of Korean female hair designers and the usability of a smart IoT grip strength measuring device. International Journal of Innovative Research and Scientific Studies. 8, 2 (Mar. 2025), 491–498. DOI:https://doi.org/10.53894/ijirss.v8i2.5200.