Use of extract of vegetation waters in the regeneration of epithelial tissue

The present invention relates to a phytocomplex or natural concentrate, rich in polyphenol compounds, such as hydroxytyrosol and Oleuropein-aglycone di-aldehyde (3,4-DHPA-EDA), derived from the pressing waters of oil olives and/or from pomace from the olive grinding process, for use in the protection and/or regeneration of body tissues, in particular epithelial tissues. The present invention further relates to a composition comprising said concentrate and to the concentrate and/or composition formulated for oral use for example as a drink, pills or the like, or as a support for topical applications, and the use thereof in the protection and/or regeneration of body tissues, in particular of epithelial tissues.