As the 'first' OP with the **silicon** typo (it was that no more), which clearly allowed the pendants hanging around here to shine their lights, I've another question.
Many years ago I assembled the bathroom sink into a piece of marble. There are several joints around the marble which were made with silicone, but in my ignorance in those days I made the silicone joints with minimum to zero bead, which has resulted in one going crinkly and the other joints looking grotty.
Bearing in mind that there is virtually no bead, can I just now go over these joints with fresh silicone, having done a scrupulous clean of course, and bead them properly ?
Thanks
Rob