Incredible silicone molds
I have those red Wilton heart molds too. I use them all the time and they have never bled into my soaps. However, I do not put my molds in the oven to heat up. Also, I had used and washed those molds several times when I was just making M&P soaps. This was before trying CP in them. I think it is a good idea to run them through the dishwasher once or twice when brand new. The dark blue ones I used new and they never bled into my CP batches. I have never oiled these molds nor have I had to put them into the freezer. The soap just sort of "peels" right out. I do, however, leave the soap in the molds for a day or two extra. Always seem a little soft to me when first "done." My little rose colored, rose scented heart shape soaps are very popular with my friends and family (I don't sell, hobby only). I should add that I soap RT only. The soaps come out really smooth top and bottom if you pour at light to barely medium trace.