Akemi Darkener Super- 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.