I used several times some of these molds. In particular, I made a princess dress (and high I had to dress several sizes). I have every time well buttered molds and put parchment paper in the bottom, and each time the tiny cake parts that were in contact with the molds have a little stuck. It does not bother me at all but it's really not like anti molds adhesives. Also, there is a seam on the side of each pan, the cake is not perfectly round (it really is a detail). Knowing that in general the cakes that is invisible is decorated! I am delighted these molds and continues to use it but I do not think they will last me for many years ...