Diotrol aqua Sun-Ex is a light stabilizer based on a wood lignin oxidant. It prevents the darkening of wood from exposure to the sun. Diotrol aqua Sun-Ex is suitable for treating raw wooden materials indoors. To improve abrasion resistance and cleanability, we recommend a follow-up application of Diotrol aqua natural oil glaze to the walls. Diotrol Sun-Ex is an aqueous solution.