Most craft stores carry a glass etchant like Armor Etch [0] as an over the counter product. The MSDS [1] indicates that it's an aqueous solution containing ammonium bifluoride, which exists in equilibrium with hydrofluoric acid.

[0] https://www.michaels.com/product/armour-etch-glass-etching-c... [1] https://www.jacksonsart.com/media/pdf/armour_etch_sds.pdf