MatrixOne Brands on Instagram: "Can you apply ceramic spray on a waxed car? Technically yes—but it’s not recommended. Ceramic coatings contain SiO₂, which needs to bond directly with your car’s paint for long-lasting protection. If a layer of wax is already present, that bond can’t form properly. For best results, strip any existing wax or sealant, apply the ceramic spray, and allow it to cure for 24 hours. You’ll notice strong water beading and a deep glossy finish. Wax can be applied afterward