Brand name: Rain-x. rain-x anti-fog prevents interior fogging before the problem begins. usage directions apply a small amount of rain-x anti-fog to a paper towel or 100 percent cotton cloth. wipe across surface to be treated. allow to dry. re-apply as needed to maintain fog-free condition. if any haze appears due to excess application, sprinkle with water and wipe with a dry cloth or paper towel until clear.. Package content: Rain-x anti fog (103 ml).