Tarbush plant was provided by Fitokimica Mexicana S.A. de C.V. (Saltillo, Me´ xico). Plant material was dehydrated in an oven at 60 1 8C for 48 h. Plant leaves were separated from
stems, and pulverized in a miller. Powdered plant was stored in black plastic bags for later use. Refined candelilla wax was provided by Bioingenio Lifetech S.A. de C.V. (Saltillo, Me´ xico). Arabic gum and jojoba oil were purchased in the local Market
of Raw Materials in the Saltillo City, Me´ xico).