Craft Commerce: Add to Cart and then Redirect to Product Page?
You would need to use javascript to change the redirect input's value

&lt;input type="hidden" name="redirect" value="commerce/cart"&gt;

For example on the 'add and create new item' button you could do something like this using jQuery:

   $('.addAndCreateNewBtn').click(function(e){
       e.preventDefault();
       var $form = $(this).closest('form');
       $form.find("input[name='redirect']").val('anotherUrl');
       $form.submit();
   });


The above is untested, but should replace the redirect value then submit the form.