Back in February, TikTok revealed that it was testing a feature that will give you a way to reset the recommendations that pop up on your For You page. Now, the ByteDance-owned app is rolling out this "refresh" option to all users, so you can get rid of video recommendations that no longer feel relevant. If you enable it, the For You feed will look as if you've only just signed up for an account, and TikTok's algorithm will start surfacing content based on your newer interactions on the app.
To give your feed a reset, head over to TikTok's Settings and Privacy menu, then scroll down until you find Content preferences. There, you'll find a new option that says "Refresh your For You feed." Take note that it's all what the new feature does — it won't change any of your settings or unfollow accounts you've previously followed.