The paint does have a matt finish (Tjhoko Paint is a self-sealing, water-based, matt chalk paint) it does not need a sealant unless you have the piece of furniture outside or in a room like the kitchen or bathroom where there is lots of moisture. The Glaze makes the surface water- and UV-Resistant. It also prevents stains and provides a more washable surface. We also recommend to seal tabletops and pedestal tops, kitchen and bathroom wall tiles (painting in showers not recommended).