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The skin, which is constantly exposed to a wide variety of environmental insults, maintains its integrity by rapidly responding to external signals. In the epidermis, most genes are set in transcriptionally poised conditions to prepare for the prompt induction of stress responding genes. Local chromatin dynamics, supported by an interplay between epigenetic regulators and transcription factors, underlies transcriptional responses upon stress exposure. This review summarizes the epigenetic mechanism regulating gene expression and discuss