I don't know about other customers, but for me, these work GREAT!!! After my BA, I seem to be on high-beam mode more often than not. In lycra bathing-suit, it's a little too much. These concealers went on smoothly on first attempt, and cannot be seen through American Apparel one-piece bathing suit lycra. There's still a small hint of nipple there, but it's modest. I will be using these for more than just swim wear. A+++