How to Block Reaction Videos on YouTube
Last updated: August 2026
Quick answer: Reaction videos are a format rather than a topic, but they are the easiest format to filter because the titles announce it. Install the free Dehook extension and add keywords like reaction, reacts to, and react to: that catches the vast majority. Ban the serial reaction channels for the few that label themselves differently, and the format is gone from your feed.
Reaction content multiplies: one original video spawns fifty reactions to it. There is no native way to filter the format out, but it has one convenient weakness: it labels itself in the title, every time, because the reaction is the product.
Why this format is beatable
Most formats are hard to filter from titles alone. Reaction videos are the exception: the word reaction, reacts, or react appears in the title of nearly every one, since creators need searchers to find them. That makes a plain keyword match the right tool, with channel bans mopping up the creative minority. No AI guesswork needed, and no false sense of magic: what you block is exactly what matches.
What happens after you block it
Blocked videos are blurred with a “Filtered by Dehook” cover (or removed entirely in Hide mode). You can always click to reveal one. And because you stop clicking reaction thumbnails, YouTube’s own algorithm gradually stops recommending the format too.
Block reaction videos in 4 steps
- Install Dehook. Add the free Dehook extension to Chrome, Edge, Brave, or any Chromium browser.
- Add the reaction keywords. In the Keywords section, add reaction, reacts to, and react to. Almost every reaction video puts one of these in the title, because the format is the selling point.
- Ban the serial reactors. A few channels title creatively (watching, first time hearing). Click the ban button on them once and they are gone for good.
- Reload YouTube. Refresh your tab. Reaction videos are blurred out of your feed, or fully hidden if you prefer Hide mode.
Dehook↑ the format, filtered
Reaction keywords plus channel bans in the Dehook popup.
FAQ
Why keywords instead of an AI topic?
Because reaction is a format, not a subject. A topic filter classifies what a video is about, and a reaction video is about whatever it reacts to. Keywords work better here: the word reaction in the title IS the format label, so matching it directly is both more accurate and instant.
What about reaction videos that never say reaction in the title?
They exist (first time hearing, watching X) but they are a small minority, and they cluster on dedicated reaction channels. Banning those channels once covers the gap, honestly and permanently.
Will this also hide videos ABOUT reactions, like chemistry videos?
A keyword match is literal, so a title like chemical reaction explained would match reaction. If that is content you watch, use the more specific phrases reacts to and react to instead of the single word.
Is my data sent anywhere?
No. All filtering happens inside your browser. Nothing about your viewing leaves your computer.