of course it is vissible if you hold it in your hand. But if the lace is glued to your sculp it becomes nearly unvissible, but therefor you have to glue it. I dont know why your saloon want to push the polly but like Paul said their must be a reason why so many wearers perfer sfs

I think they want that you buy a poly from them, because of the money they would get from you and not because its the best method.

But to be shure buy one lace and one poly (all pieces are cheep her on toplace in comparison to other companies) and then compare both and make your own decision