In a mirror, you would like see your own reflection and not water or soap smudges or fingerprints.
There are many products for mirror and glass cleaning. You spray, wipe, polish, and smudges are still there.
Looking for a reliable solution? Use Presto wipes for mirrors and glass.
Just take one of them, wipe the surface, and there you go!
The formula will let you remove all smudges in no time and forget about them.