In in-vitro conditions, the Drug concentration, or IC50 value mainly depends on cell type and incubation period. With your limited information, it will be difficult for members to provide any suggestions. you can check the papers.
Thank you for your answer. i need it for my final project, its about wound healing. the skin cells are so different, kondrocyt, fibroblast or ... , and i did not choose it. and for incubation period i have not make desicion yet. if you have any information can help it would be helpfull please share it or if you have any helpfull paper it will be my pleasure to read...