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Classical facial proportion systems used in restorative art divide the adult face into three equal horizontal thirds to locate features and establish balance. The superior third extends from the normal hairline to the top of the eyebrows; the middle third extends from the eyebrows to the base of the nose; and the inferior third extends from the base of the nose to the base of the chin. These divisions help practitioners evaluate vertical placement of features, diagnose distortions resulting from trauma or disease, and plan wax restorations and cosmetic highlights/shadows. A complementary system divides the face vertically into five equal widths, each approximately the width of one eye, but that is a vertical width measure, not the primary horizontal thirds used for height placement. Halving the face into two parts or using four thirds lacks the anatomical landmarks relied upon in practice. By returning to the three-thirds model, the restorer can accurately check whether the ears align to the middle third, whether the mouth opening falls within the lower third guidelines, and whether nasal and orbital features are positioned naturally before applying wax or cosmetics.