The surface to be treated must be completely dry and clean. Always try the product in an inconspicuous area prior to use. Evenly apply a consistent amount of Lithofin MN Colour Intensifier with a clean brush, a roller or a cloth. On highly absorbent surfaces, this procedure may have to be repeated after five minutes. The product should saturate the stone without drying on the surface. Less absorbent surfaces may have to be towelled off. Attention! treat only completely dry surfaces (drying time for newly laid surfaces; up to 8 weeks; after rain or after cleaning: several days). Non-absorbent surfaces such as polished or fired materials such as porcelain or ceramic tiles can not be treated. Glass, wood, plastics and other surfaces sensitive to solvents must be protected against splashes. Application Temperature: the temperature of the surface should be between 5°C and 25°C. Switch off under floor heating. Drying Time: safe to walk on after approx. 30 minutes, completely dry after 24 hours.