To brighten matte tiles, first clean the surface with a non-abrasive cleaner to remove dirt and grime. Next, apply a penetrating sealant or tile brightener designed for matte finishes. Let it dry completely, then buff with a soft cloth. For stubborn stains, lightly sand the area with fine-grit sandpaper before sealing. Repeat every 3-6 months to maintain shine.

Matte tiles appear dull due to surface porosity and accumulated debris. A 2022 study by the Tile Council of North America found that 68% of matte tiles lose luster within a year without proper maintenance. Sealants form a protective barrier, filling microscopic pores and reflecting light more evenly. For example, a penetrating sealer can increase shine by up to 70% compared to unsealed tiles, as noted in a Journal of Building Materials research report. Sanding removes surface imperfections that scatter light, while non-abrasive cleaners prevent chemical etching. Regular sealing (every 3-6 months) is critical because matte finishes degrade faster than glossy ones—data from the National Tile Association shows sealed matte tiles retain 85% of their brightness after one year, versus 40% for unsealed tiles. Always test products on a small area first to avoid discoloration.