Etching
From Fritipedia
What is etching?
Etching is the process by which the glass is given a matt effect. This is acheived by using etching liquid or cream.
Etching liquid
To use etching liquid you need to place the beads in the liquid for the specified time. The beads need to be moved around to ensure that they are uniformly etched. Once etching has been finished the bads should be thoroughly washed in warm soapy water. Some places recommend that you rinse in Bicarbonate of Soda.
Etching cream
This is the same as the fluid except the cream is applied to the areas that you want to acheive the etched effect on.
Etching cream contains ammonia and should be treated accordingly. Contact with the skin should be avoided and it should be used in a well ventilated area.