Supermarkets have it. Generally, it says edible baking soda, and some food stores also have it.

It's an alkali added to noodles to help fermentation when making pasta.

This is the edible baking soda powder used at home.

The pretty woman said that baking soda can also be used to remove blackheads, which is embarrassing.

The method is to add pure water to baking soda, apply 15 minutes on the blackheads with a cotton pad, gently rub it and wash it off. The effect is OK.