Things You'll Need
Instructions
Soak the glass in denture cleanser overnight.
For slick glass, remove from denture cleanser and scrub with stove top polishing cream.
If the glass still isn't clean, spray it with bathroom soap scum remover and scrub it off.
For other types of glass, for which scratches are not as big an issue, use scouring powder to scrub the glass. Use soft cloth or cotton balls to scrub in order to minimize abrasion.
Begin scrubbing in a small, inconspicuous place towards the bottom of the glass, to test the reaction to the cleaning solution. If paint begins to rub off, stop scrubbing immediately and find a weaker cleaning solution.
Dry your glass thoroughly to avoid crizzeling. If it is a bottle or similar item, turn it upside down on a dish rack to allow moisture from the inside to drip off.