Impregnation which intensifies colour shades extremely well. Beginning of protective effect (20°C): approx. 24-48 h. Foodsafe (certified by an external German testing institute) Field of Application: Weather-resistant product with a long-term effect for indoors and outdoors. Especially suited for colour enhancement of dark and black stone (such as Nero Assoluto, Impala black and Galaxy). Weather-resistant product with a long-term effect for indoors and outdoors. Damaged areas (e.g. hairline cracks) can be treated. The surface thus obtains a homogeneous appearance. Especially suited for fine ground and polished stones