Clearing the YouTube cache can help solve loading and performance issues and is different from clearing your watch or search history. On mobile devices, you can clear the cache by going to your device's settings, finding the YouTube app under "Apps" or "Application Manager", and selecting "Clear Cache." This action does not delete your app data or account information. On desktop browsers, clearing the cache is usually found in the browser's settings under "Privacy" or "History", where you can select to clear cached images and files. Clearing the cache removes temporary files stored by the browser to speed up loading times but does not affect your browsing history or logins.