Gene expression profiles of pro-inflammatory cytokine genes after 1 h (IL1A), 3 h (IL6), and 6 h (CXCL8) for dermal fibroblasts scratches treated with wIRA, heating w/o wIRA and UV-B irradiation. Furthermore, differences for growth factor gene expression were evaluated after 6 h and heat shock protein gene transcript levels after 12 h as well as collagen gene transcription after 48 h. Hashtags [#] designate significant differences of scratch wound healing or transcription levels at the respective time point compared to the control under optimal conditions (# p < 0.05, ## p < 0.01, ### p < 0.001) while the plus sign [+] specifies significant differences between wIRA-treated samples and those receiving heating w/o wIRA under non-optimal conditions at the respective time point (+ p < 0.05, ++ p < 0.01).