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In this paper, we discuss what biomarkers to choose if there is a need to describe the results of laser therapy targeting keloid skin. We elevate the known cytomarkers (Krt14, Lgals7, Krt5, Dcn, Lum, Igfbp5, Cd31, Vwf, Stambpl1, Uqcrb, Cd3 and Acta2), biomarkers of the inflammatory response (Cd45/Ptprc, Adgre1, Ly6g, Il1b, Il4, Il13, Il22, Cxcl2 и Ccl17), as well as the proteins of extracellular matrix (type I and III collagens; precursors of COL5A1 and COLA1A; FTL, COL3A1, PGLS, CNN2, ANXA2, TPSAB1, COL12A1, precursors of APCS and ALB), and their encoding genes (FGF7, BAX, CCND1, MMP3, MMP9, CXCL1, -2, -5, -6 and -12; IL8, S100A7 and IL1A), those expression and co-location may potentially change the appearance and internal structure of damaged skin. We also describe how to choose biomarkers using the results genomic studies and their limitations. Moreover, we provide examples of how different groups of gene and protein biomarkers are used in experimental biology and clinical practice. According to the previously published data, well-known biomarkers verified on animal models, depend on their biological effects, let to characterize structural changes and changes in the composition of cells represented at the site of damage before and after the treatment. In addition, the published experimental and clinical data provide an opportunity to analyze the efficiency of new experimental approaches and compare them to each other.