Sealer haze: Natural stone and grout surfaces can only hold a certain amount of sealer.
If excess sealer is left on the surface and it dries it could cause a smooth, silky white haze.
Sealer haze on the surface of tile and stone surfaces will wear off during normal foot traffic. Sealer haze on grout lines can be cleaned using a towel soaked with fresh sealer. This will dissolve the excess and can be wiped away.
In extreme conditions using a high ph tile and grout cleaner and a rotary scrubber can speed up the process of removal.