You cannot block Facebook itself on TikTok, but you can stop Facebook from tracking your TikTok activity

TikTok and Facebook are separate apps, so there is no setting inside TikTok that blocks Facebook from appearing or messaging you. What you can do is prevent Facebook from collecting data about what you do on TikTok — which is what most people mean when they ask this question.

Facebook owns Instagram and can track your activity across the internet through a tool called the Meta Pixel. This pixel is a piece of code that websites and apps use to send information back to Facebook about what you click, watch, or buy. TikTok does not use the Meta Pixel, but Facebook can still infer information about you based on your device, your IP address, and other signals. You can reduce this tracking by changing settings on your Facebook account and on your device.

Key Takeaways

  • Facebook cannot see inside TikTok directly, but it can infer information about you based on your device and internet activity.
  • Turning off "Ads based on data from partners" in Facebook's ad settings stops Facebook from using information that other apps and websites collect about you.
  • Enabling "Limit Ad Tracking" on iPhone or "Opt out of Ads Personalization" on Android prevents apps from sharing your advertising ID with Facebook.
  • Using a separate browser profile or a private browsing mode when you use TikTok makes it harder for Facebook to connect your TikTok activity to your Facebook account.

Turn off partner data in your Facebook ad settings

The most direct way to stop Facebook from using information that other companies collect about you is to disable "Ads based on data from partners" in your Facebook settings. This tells Facebook not to use data that TikTok, your bank, your email provider, or any other company has shared about you.

To do this on a computer: go to facebook.com, click the menu icon (three horizontal lines) in the bottom right, select Settings and privacy, then Settings. Click Ads on the left side. Under "Ad preferences", click Ads based on data from partners. Toggle it off. On a phone, the path is the same but you may need to scroll to find the Ads section.

This setting does not prevent Facebook from showing you ads — it only stops Facebook from combining data that other companies have collected about you with your Facebook profile. Facebook will still show you ads based on what you do inside Facebook itself.

Limit ad tracking on your phone

Every phone assigns your device a unique advertising ID that apps use to track you across different apps. You can tell your phone to limit how apps share this ID with companies like Facebook.

On iPhone: go to Settings, tap Privacy, then Tracking. You will see a list of apps. Toggle off the ones you want to prevent from tracking — or toggle off Allow Apps to Request to Track at the top to block all apps at once. This is the most effective single step you can take.

On Android: go to Settings, tap Google, then Manage your Google Account. Go to the Data and privacy tab, scroll to "Ad settings", and tap Opt out of Ads Personalization. This tells Google not to use your advertising ID for personalized ads, which limits what Facebook can infer about you.

Use a separate browser profile for TikTok

If you use a web browser to access TikTok instead of the app, you can create a separate browser profile that is not logged into Facebook. This makes it much harder for Facebook to connect your TikTok activity to your Facebook account.

In Chrome: click your profile icon in the top right, then Add. Create a new profile without signing into your Google account or Facebook. Use this profile only for TikTok. In Firefox: click the menu icon (three horizontal lines), go to Settings, scroll to Firefox Data Collection and Use, and check Only send data when Firefox is closed. You can also use Firefox's Private Window mode, which does not store cookies or browsing history.

This approach is more cumbersome than using the app, but it is one of the most effective ways to prevent cross-site tracking.

Understand what Facebook can and cannot see

Facebook cannot see the videos you watch on TikTok, the accounts you follow, or the comments you post. TikTok is a closed platform and does not send that information to Facebook.

What Facebook can see is that you visited TikTok.com or opened the TikTok app, roughly when you did it, and what device you used. If you are logged into Facebook on the same device, Facebook can connect this information to your account. If you click a link from TikTok to another website that uses the Meta Pixel, Facebook will know you came from TikTok and can track what you do on that website.

The steps above reduce this kind of tracking, but they do not eliminate it entirely. If you want the strongest privacy protection, you would need to use TikTok on a device that is not logged into any Facebook account, or use a VPN to hide your IP address — though a VPN slows down your connection and may cause TikTok to behave unpredictably.

Why Facebook wants to track you across apps

Facebook's business model depends on selling ads to companies that want to reach specific kinds of people. The more data Facebook has about you — what you buy, what you watch, where you go — the more precisely it can target ads to you, and the more it can charge advertisers.

When you use TikTok, you are generating data about your interests and behavior. If Facebook can connect that data to your Facebook profile, it can show you ads that are more likely to make you click. This is why Facebook tries to track you across the internet, and why the company has paid billions of dollars to acquire other apps and build tools to do this tracking.

Understanding this motivation helps explain why Facebook's privacy settings exist in the first place — they are there because regulators in Europe and the United States have required Facebook to give you some control over your data. The settings work, but they require you to actively turn them on.

Frequently Asked Questions

Can Facebook see my TikTok videos or my TikTok account?

No. Facebook cannot see inside TikTok. It cannot see what videos you watch, what you like, or who you follow. TikTok does not share that information with Facebook, and Facebook has no way to access it.

If I block someone on Facebook, will they be blocked on TikTok too?

No. Facebook and TikTok are separate platforms with separate blocking systems. Blocking someone on Facebook does not affect TikTok, and blocking someone on TikTok does not affect Facebook. You would need to block them separately on each app.

Does turning off "Ads based on data from partners" stop all Facebook tracking?

No. It stops Facebook from using data that other companies have collected about you, but Facebook still tracks what you do inside Facebook itself and can show you ads based on that activity. To reduce tracking further, you also need to limit ad tracking on your phone.

Will using a VPN on TikTok stop Facebook from tracking me?

A VPN hides your IP address, which makes it harder for Facebook to connect your TikTok activity to your Facebook account. However, if you are logged into Facebook on the same device, Facebook can still connect the two through your device ID. A VPN is most effective when combined with the other steps listed above.

Why does Facebook still show me ads about things I only searched for on TikTok?

This usually happens because you searched for something on TikTok, then visited a website that uses the Meta Pixel, or because you have the same interests across multiple platforms. It is also possible that the ad is coincidental — Facebook shows billions of ads, and some will match your recent searches by chance. Turning off partner data and limiting ad tracking reduces this, but does not eliminate it.