I locate concrete sealers are super uncomplicated to apply. Just clean up the concrete, Permit it dry, then use the sealer that has a mop. It won’t alter the color with the concrete, but will darken it a little and increase some gloss. You’ll have to reapply it each year https://mcgepoxycoatings.com/epoxy-vs-untreated-concrete-garage-flooring-which-one-is-best/