Diotrol aqua Wall-Care is a one-time protective coating on raw coniferous wood, such as spruce or pine, which effectively prevents the wood from darkening due to the influence of light. We have succeeded in combining a light blocker with a lightening additive without pigments, peroxide or oxalic acid in a natural oil binder made from renewable raw materials. Diotrol aqua Wall-Care is an aqueous product, can be washed off with a damp cloth and painted over.