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The mechanics are simple: after posting a comment, tap "Edit" below it, make your changes, and hit the blue checkmark to save. You can edit as many times as you want within the 15-minute window—after that, it's locked in. Edited comments get a small grey "Edited" label, so others can see a change was made, but they won't see what the original said. No edit history, unlike iMessage, which lets you scroll through past versions.

There's one more limitation worth noting: only the text portion of a comment can be changed. If you dropped a photo alongside your comment, the image stays as-is regardless of how many times you go back to tweak the words.

The feature had been in quiet testing since March before Thursday's official rollout. Reactions online have been unsurprisingly positive—Instagram, which crossed three billion monthly active users last year, had never offered comment editing before. Users could only delete and repost, which wiped out any existing replies in the thread.

The update is part of a broader push by Meta to address long-standing user frustrations on the platform. It follows recent additions like the ability to reorder carousel photos after posting and changes to the Reels algorithm.