Abstract: A diet spray or powder that may be used by a dieter to render a portion of a meal unappetizing. After eating an initial portion of a meal, a dieter may apply a spray or powder to remaining food portions so as to inhibit further eating, and thus reduce total caloric intake and/or inhibit ingestion of additional portions. The use of the product can promote or strengthen a dieter's will-power in the face of surplus, but tempting, food by direct and/or psychological support.