I locate concrete sealers are super easy to apply. Just thoroughly clean the concrete, Allow it dry, then apply the sealer using a mop. It won’t change the colour on the concrete, but will darken it a tad and insert some gloss. You’ll need to reapply it on a yearly https://mcgepoxycoatings.com/epoxy-vs-untreated-concrete-garage-flooring-which-one-is-best/