Abstract: The invention relates to the use of an extract of the fungus Inonotus obliquus for maintaining and/or increasing the cohesion of the skin tissues, for preventing the appearance of and/or for reducing shadows and/or bags in the area around the eyes, for maintaining and/or increasing the radiance and/or homogeneity of the skin complexion and/or for maintaining and/or increasing the barrier function of the skin and/or for increasing the skin microcirculation. The invention also relates to the extract of I. obliquus or a dermatological composition comprising same, for its use for reducing ruddiness and/or for preventing and/or reducing pathologies resulting from a reduction in the cohesion of the skin tissues, notably itching and/or couperosis.