You should see this statement in your Henry owner's manual
TO MAINTAIN OR RESTORE THE RECEIVER TO ITS ORIGINAL FACTORY
SHINE, WE SUGGEST YOU USE PEEK METAL POLISH, FLITZ, OR NEVR
DULL.
These products come in different versions. Just make sure to use the product versions specifically for cleaning gun brass (ammonia free).
Ammonia is not long term friendly to brass alloys.
Afterwards buff with Renaissance wax for a protective layer.
Use 100% cotton cloth only. No polyester content and no microfiber. These will leave very fine scratches in the brass.