Features: VOC Exempt Fast to Medium Dry Kosmic Reducer The only reducers we recommend for use with the House of Kolor System RU300 can be used to reduce all Kosmic System products: Kandys Clears and all Shimrin basecoats. It will not change the VOC content of any product it is added to and will not react with any coating. It is a fast to medium dry reducer that can be blended with other reducers for varied dry times.