I uncover concrete sealers are super uncomplicated to use. Just clean up the concrete, Allow it dry, then implement the sealer having a mop. It won’t change the colour of the concrete, but will darken it somewhat and include some gloss. You’ll need to reapply it each year or so https://mcgepoxycoatings.com/epoxy-vs-untreated-concrete-garage-flooring-which-one-is-best/