TI - Determination of usage potential of Hypericum perforatum, Hypericum capitatum, Centaurea cyanus extracts and creams in the cosmetic industry AU - ABAHUNI UÇAR, M. AU - MOROYDOR DERUN, E. AU - PIŞKIN, M.B. SO - Sigma Journal of Engineering and Natural Sciences 2023;41:443-450. DO - 10.14744/sigma.2023.00051