GL M520 Ultra Penetrating Stain Reducer is specially formulated to thin and enhance the flow of ultra penetrating wood stains, ensuring even absorption and smooth application. This reducer helps prevent blotching and streaking, allowing for a consistent, flawless finish on all types of wood surfaces. Ideal for use with GL M520 stain series, it improves stain penetration and color uniformity. Perfect for woodworkers and finishers seeking professional results, GL M520 Ultra Penetrating Stain Reducer extends working time and enhances control during application, delivering deep, rich color that highlights the natural beauty of the wood grain