I’m just lucky if my soaps work to worry about bevelling, and I don’t sell. But always learning. We have Trader Joe’s in CA, and we’ve used their soap for years — I prefer my own now, but their mild soap was fine for a long time. My daughter tipped me off about the bars. They have one edge heavily beveled. The reason for it, said my daughter, is so that a new bar will fit snuggly into the soap dish in the shower without jumping off. By gum, it works!!