Hide ClientID in login with twitch request

Actually, when the user logs in, twitch redirects to http://localhost:4200 and on the top I can see my url that looks like:

http://localhost:4200/#oauth=dfasgdsgasgas

So, the end user actually see HIS oauth, but it’s good right? Since it is his oaught and I use it to know the info that he allowed me to see.
Or there is a way to hide this content when he gets back to http://localhost:4200?