Kleenex tissues are primarily made from a combination of pulp and recycled fibers, which are generally biodegradable. However, the biodegradability can depend on the specific product and any added materials, such as lotions or fragrances that enhance the tissue's usability. While the pulp itself can break down over time in a natural environment, the presence of these additives may affect the process. It is worth noting that when disposed of in a landfill, the decomposition process can take longer due to the lack of air and moisture. To ensure environmentally friendly disposal, it may be beneficial to check the packaging for any specific guidance from Kleenex on disposal and environmental impact. For the most current information, it is a good idea to explore kleenex.com or their latest materials on sustainability.