This response header can be used to trigger a client side redirection to a new url that will do a full reload of the whole page. It uses the browser to redirect to the new location which can be useful when redirecting to non htmx endpoints that may contain different HTML head content or scripts. See HX-Location if you want more control over the redirect or want to use ajax requests instead of full browser reloads.
A sample response would be:
HX-Redirect: /test
Which would push the client to test as if the user had entered this url manually or clicked on a non-boosted link <a href="/test">
Response headers are not processed on 3xx response codes. see Response Headers