Activated oxygen containing compounds for improving the microcirculation of the skin

A method for improving the microcirculation of the skin of a subject having normal and healthy skin and whose skin microcirculation is sought to be improved, which comprises externally applying to said skin of said subject a pharmaceutical composition comprising a cosmetically and dermatologically well-tolerated organic compound comprising activated oxygen which is selected from the group consisting of acetal peroxide, peroxyaldehyde, peroxycarboxylic acid, and mixtures of these compounds, in an effective amount for improving the microcirculation of said skin of said subject.