Several factors can compromise the stability of the spinal column and potentially lead to the development of scoliosis. This condition affects both genders, although it is more prevalent in females during adolescence. The aim of the study is to propose a conceptual design and conduct a numerical simulation of a scoliosis brace using fiberglass and carbon fiber, with the purpose of assessing and comparing their structural performance. A mesh convergence analysis was performed, the Tsai-Wu failure criterion was used, and multiple simulations were carried out for the proposed design by varying the number of layers and the type of material. Additionally, a simulation of the whole assembly was conducted. The results suggest that both fiberglass and carbon fiber are structurally viable options. However, carbon fiber is recommended due to its superior mechanical strength, stiffness, and reduced weight compared to fiberglass. Moreover, the proposed design excludes the use of mechanical components, leaving only strap-based adjustments to enhance ergonomic performance.