What part of a plant do they use for pampers?

Pampers and other disposable diapers primarily use pulp derived from wood fibers, which comes from trees. The absorbent core of the diaper is often made from a combination of fluff pulp and superabsorbent polymers, which help to trap moisture. While not directly from a single part of a plant, the cellulose fibers are a key component sourced from the wood of trees.