The silicone next to the sink in the bathroom has become black over time when it is exposed to moisture. And it is really unsightly. In fact, two possibilities result in such a situation.

The first possibility is it goes musty. At this point, we can twist kitchen paper into an axial shape and dip it into bleach. Next, apply the towel on the silicone and keep it for a night, and then the following day scrub it with a sponge and rinse off thoroughly with water. The situation can be improved by following the above steps, and if it is not serious, the original whiteness should soon be restored.

If the musty situation is more severe, repeat these steps several times and the effects will be better. The second possibility is that the silicone substances exposed to moisture over time give rise to qualitative change. If so, no matter how you clean, it is impossible to restore it to its former state.

And the only method is to scrape off the old silicone with a box cutter and replace it with new one. And then it will be as pretty and clean as the original one.