* Capacity: 2oz per bottle Frog Spit Anti-Fog was specifically designed as an Apply and Let Dry product requiring no rinsing or buffing. Frog Spit is easy to use. always start with a clean dry surface. Apply just one or two drops and lightly spread a thin layer over the inside of each lens with your finger and it let dry. Thats it!. Frog Spit will dry smooth and clear, providing a highly effective and long-lasting anti-fog layer. Frog Spits crystal clear, proprietary Green formula is earth friendly, water soluble and biodegradable containing no silicone, alcohol or other petroleum distillates. Frog Spit is safe and effective for use on all types of glass or plastic face shields, masks and protective eye wear.