Use toothpaste: First, apply toothpaste on a rag, and then use it to wipe the tea stains on the glass, this method can effectively remove tea stains.

Baking soda and toothbrush: Dip a toothbrush in baking soda and brush the tea dirt inside the cup. This method can also quickly remove tea stains.

Edible salt: First clean the glass with water, and then apply edible salt to the thicker part of the tea scale, especially the inside of the glass, and then rinse with water after a period of time.

The above methods can effectively remove the tea stains on the glass, you can choose the right method according to personal preferences and actual situation.