Project that seeks to design and develop new additives for the footwear industry through the substitution of different potentially hazardous additives and with a clear prospect of entering the REACH lists of banned substances in the EU, with safer additives that maintain the quality, durability and performance of the final products without entailing a higher cost in the process. A complete study of the sole development process will be carried out, from the initial laboratory stage to large-scale production. Initially, an in-depth research will be carried out through a bibliographic search of possible safer alternatives. Among them, the obtaining of additives from renewable and sustainable sources such as sugarcane, functionalized starch or functionalized silica will be evaluated. Subsequently, the pre-dispersions of these additives will be carried out, developing different formulations with polymeric bases compatible with rubber. Possible modifications in the mixing conditions will be evaluated to reduce costs by optimizing the process. The pre-dispersed additives will later be used in the company RUIZALEJOS, where they are mixed with rubber to adapt to different conditions of use and obtain different properties. In summary, it is expected to develop new additives that are used for different functions in the vulcanization process (antioxidants, accelerators, anti-scorching), which are safe for the environment and health and maintain the same performance as the usual additives, which will improve the company’s competitiveness in the market.