From the importance of packaging as a primary factor of buying and using industrial products, we have proposed in the search quality about the usability of instructions for use with pictorial images of comprehensibility through evaluating your level of ergonomic methods, already applied in graphic symbols. The methods used were: production, comprehension, reidentification, election, class of adequacy, suitability classes distribution, estimation of understandability and correspondence. This research proposes a method for comparative assessment of efficiency of these methods of comprehensibility of graphic symbols from Binary Evaluation technique by means of weighted criteria proposed by David Meister. This research proposes also a graphical analysis method made from instructions of use of hair colourants adapted from heuristic evaluation of usability of interface proposed by Jakob Nielsen and Rolf Molich researchers in the 90.