Amazon calculates a product’s star ratings using a machine learned model instead of a raw data average. The machine learned model takes into account factors including: the age of a review, helpfulness votes by customers and whether the reviews are from verified purchases.
Impressed after 1 application. All mould is under the silicone and had not budged with bleach or regular household chemicals. I left it on for 8 hours. Will try again another day and it will hopefully lighten up even more.
I had a few spots of mold on the silicon behind my ensuite basin. Nothing shifted it. Tried this. Removed some spots. Tried it again, got rid of all but one spot. The remaining spot is significantly faded though. This is a very thick product, so I would recommend turning the bottle upside down for an hour before using as it's difficult to sqeeze out.