Managing who can comment on your posts

You can control who can comment on your posts at the account level or per-post:

• Account level: Settings → Privacy → Comments → Allowed commenter types (Everyone / People you follow / People who follow you / Close Friends / Off).
• Per post: Edit any post → Comments → select a setting. This overrides your account default for that post.

You can also add a keyword filter: Settings → Privacy → Comments → Hidden words. Comments containing those words are automatically hidden.