"What lace?!"  is when someone's hair has been LAID to perfection. What this means is, the closure or frontal has been installed so seamlessly, it blends right into the skin leaving the lace practically undetectable. Hence, the term, "what lace" because we can't see it. As far as we're concerned, that's YOUR hair growing out of YOUR scalp. Both lace frontals and closures are a great way to protect your edges around your hairline and your natural hair from heat damage.