The white correction part is dry white correction material on film. It's supposed to be that way. The black is the part that ought to be wet with ink. I don't think that anyone makes the older bichrome correction ribbon anymore. There's still NOS out there, but I generally don't recommend it as, though it may work, it throws flecks of white into your segment and onto your typebars. It makes a heck of a mess and is a pain to clean up.

If you need it, you can find old correction tabs out there or correction tape which is far easier (and cleaner) to use.

Better ribbon can be found here: https://site.xavier.edu/polt/typewriters/tw-faq.html#q1

Reply to u/OalBlunkont at https://www.reddit.com/r/typewriters/comments/1xkpg95/ribbon_for_brother_charger_11c/