Use in bathtub to cover gaps. Very good quality. Works easily even by amateurs.

We use it for sealing the exterior pool lighting fixtures and it is permanently exposed to rain. From the first months of product release and onwards, that is, for several years. Both the transparent and the white one. Its lifespan, if the light fixture does not need to be removed for other reasons, is 6-7 months during the summer months, which in combination with temperature fluctuations, pH, and chlorine, is indicative of the product's effectiveness. It may withstand more, however, I do not have relevant experience.