HG Natural Stone Shine Restoring Cleaner
Dissolve 50 ml (half a cup) in half a bucket (5 l) of lukewarm water. Then clean the floor with a wrung-out mop or floor cloth, regularly rinsing it in the cleaning solution. Do not rinse or mop dry, simply leave the floor to dry on its own.
1 litre is sufficient for 20 washes.