SC6000 Leather Protectant for BooksThis is a half ounce trial size. Be sure to keep the container sealed thoroughly because SC6000 will dry out and harden if exposed to air. You can put a bit of waxed paper inside the container to be even more thorough.SC6000 is good for abraded areas of leather to seal and protect them. Use after applying the leather consolidant: Klucel-G. It is also good for sealing Japanese tissue repairs on corners and along board edges.