Pure silicone caulk is mold-proof, even in the white variation. The various "improvements" in many caulks allow mold to get a foothold.
After decades of owning multiple bathrooms and only using products advertised as 100% silicon caulk, I can assure you that it is not mold-proof.
does "mold proof" mean mold won't grow on the surface, or that mold will not affect the silicone?
After decades of owning multiple bathrooms and only using products advertised as 100% silicon caulk, I can assure you that it is not mold-proof.