The invention relates to a method for purifying 3,4-dihydroxyphenylglycol (DHPG) from any part of the plant, the products or the by-products obtained from the olive tree or any other plant product of the Oleaceae, Orobanchaceae, Plantaginaceae, Compositae, Lamiaceae, Acanthaceae and/or Scrophulariaceae families, including one or more steps in which the initial product is introduced into at least one ionic resin column, and possible subsequent steps in which the product eluted in the preceding column is introduced into a column containing ionic resin and/or non-ionic adsorption resin. The invention also relates to the DHPG extract which can be obtained by means of the aforementioned method and to the uses thereof.
