Astonish Tea Coffee Stain Remover from UK 

 
 Tea & Coffee Stain Remover
1. Read cautions carefully before use. Place stained cups, saucers etc. in the sink or on the draining board as the reaction may be vigorous and water may overflow.
2. Add 1 teaspoon (5-6g) of Astonish Tea and Coffee Stain Remover per tea/coffee pot, flask or 1/2 teaspoon per cup/mug.
3. Fill with hot water (not boiling) and allow to stand until cool.
6. Empty and rinse with cold water before use. For heavily stained items repeat if necessary.