Absolutely crazy about this product! I just painted a backsplash with Mapei grout and decided to use their "suitable" white silicone to fill in the gaps. Although I get an excellent product. But that's not the case. I have done such a good job with silicone and tiles. Now 1-2 months it will be YELLOW! At first I thought it was a corner when my wife pointed to it ok maybe there was something there. now I think it's getting worse every day! It's turning yellow EVERYWHERE, all my pretty grouting in my expensive kitchen is getting this yucky yellow cast, AWESOME! Now I have to spend hours caulking with another brand of REAL SILICONE and who knows it might look awful. caulk this junk.Very disappointed and upset with this Mapei product!Do not buy!