Out of 16 applied collar tabs, only 6 are still attached to the shirts to which they were applied. I followed the instructions exactly, but I still had a terrible failure rate. All of the failures occurred in the first washing. I did notice that most of the failed tabs were attached to 100% cotton materials. The tabs that were attached to synthetic blend textiles were far more successful. To say the very least, I am very disappointed with the performance, particularly at the price paid.