If the knots in the piece are not totally bleached all over the piece, then why bother going with lace all around ?, as I understand, the main purpose of lace is to allow people to see your scalp (assuming the density is low enough to allow it), but if the knots are not bleached, the entire illusion collapses...

Does Toplace guarantee that all the knots will be bleached in the wig, or just the frontal hairline ?, if the guarantee is for the entire wig, why are you accepting anything less ?