60ml: Osmo - Oil Stain Hardener - (6631H) Osmo Hardener for Oil Stain acts as an additive for Osmo Oil Stain for accelerated drying. The drying time is shortened from 12 hrs to just 4 hrs by simply pouring the contents of the hardener (60ml) into the 1L Oil Stain can and stirring thoroughly prior to application. 150ml of hardener is required for 2.5l Oil stain (60ml per 1ltr) SURFACE PREPARATION Preparations before use of Osmo Oil Stain are not influenced by the application of the hardener additive. These are valid without any restrictions. For this purpose, please observe the product information for Osmo Oil Stain. The finished surface is influenced by several factors, including the condition of the wood. Therefore, a trial application is always required, especially for unfamiliar surfaces. METHODS OF APPLICATION Add Osmo Hardener for Oil Stain completely to the can of Oil Stain (1.0 litre) and stir so that both components are mixed well. Further processing to be carried out corresponds to that of Oil Stain. Note: Pot time is reduced down to 60 minutes by add-ing the Hardener. Please do not mix together more material than you can process with certainty within 45 minutes. If you do not use the entire can of Oil Stain, add 6% Hardener mix in a separate container! NOTE Pot time is reduced down to 60 minutes by adding the Hardener. Please do not mix together more material than you can process with certainty within 45 minutes.