The card does not say how often masks can be made and does not single out areas of the face. It describes the uses: a face and body mask (15-20 minutes), a hair mask (20-30 minutes) and a bath additive (100-200 g of powder, 20-30 minutes). For external use only; avoid contact with the eyes and mucous membranes.
General information (not a manufacturer's instruction): the frequency is best chosen by how the skin reacts, and it is reduced if the skin feels tight or dry.