Pour around 1/4 cup of coarse salt into the bottle you want to clean. (I like to use extra ... like steel wool or stiff scrub brushes that can scratch glass surfaces. In some cases, vintage ...

Another way to clean the brushes is with a gentle shampoo ... You can use a glass jar or a regular glass cup like I did. You pour a cup of hot water, a tablespoon of dish soap, and a tablespoon ...