Is it like Play-doh or Plastilina?
No. Those products are not thermal set plastics. The first is a colorful salt based modeling compound sold to children, and the second is a brightly colored form of polymer modeling material that does not harden. If heated it will melt. Plastilina is used by children and by animators who do stop-frame animation work such as “The Adventures of Gumby”. VanAken makes this material as well as Kato Polyclay, so use caution not to confuse the two.