All about glass

Smooth glass:
Smooth (unfinished) products can be washed in a dishwasher. However, use a delicate program and a temperature of no more than 60 ° C. Use mild washing-up liquid. This also applies to rinse aid. Pay attention to the hardness of the water and balance it with regeneration salt. Due to the use of strong detergents and increased water hardness, the glass may become damaged (tarnished).
When putting the dishes in the dishwasher, make sure that the glassware does not lie on top of each other or touch other dishes. There is a risk that they may scratch or crack during the wash cycle (by hitting or rubbing against other dishes). After the washing cycle is over, open the dishwasher door as soon as possible; the condensation in the dishwasher has a negative effect on the glass.
Generally, the manufacturer does not recommend washing this glass in the dishwasher on a regular basis; rather occasionally.

Decorated glass:
Products decorated with gold, platinum or dyed with any color are not suitable for washing in a dishwasher, they should be washed by hand in lukewarm water, using a soft sponge and a mild, non-aggressive detergent. After cleaning, wipe the glass with a soft cloth.