Conducting business in today's changing and competitive environment requires that companies pay attention to certain product category management criteria related to the quantities of purchased products, limited sales space, inventory costs, sales speed, etc. The key product category management criteria observed in the paper are GMROI, GMROIS, stock turnover ratio and contribution margin. GMROI shows how profitable it is to invest in a certain type of product or product category, since it primarily takes into account gross profit and average cost of inventory. As an extended indicator, GMROIS also takes into account the spatial limitation for the observed products or product categories, which means that it represents a more reliable indicator of the profitability of investing in certain products, as it provides additional information about the efficiency of stock disposal and, at the same time, limited sales space. The inventory turnover ratio shows how many times a certain product or product category is turned over for a certain period of time. The inventory turnover ratio is one of the key measures of product category management because it directly shows the speed of turnover and thus the days of binding certain products. It is of great importance because it helps companies to decide whether it is worth selling certain categories of products, whether they should reduce or increase purchasing quantities, and so on. Contribution margin is a key measure of product category management because through including variable costs it summarizes the amount that is sufficient to cover other fixed costs of individual product categories. The calculated key measures for the product category management of the company DC Beauty indicate that the company has a relatively inefficient use of the purchased quantities of inventory and the allocated sales space, which negatively affects the results of the GMROIS indicator and the working capital ratio. The observed categories of false eyelashes of the company DC Beauty record very high margins, which has a positive effect on all the mentioned criteria of product category management.