This hardener penetrates the wood deeply and blocks tannin bleed-through, while preserving the wood's natural appearance. Formulated with UV inhibitors to minimize the impact on the film's color, it can be used in a system with all water-based varnishes in the PUR-T® range. Fluid and ready to use, it allows for a uniform application without overlap marks. It dries very quickly – 1 to 2 hours between coats – requires no sanding, and offers a coverage of 10 m²/L per coat.