The undetectable lace that we use allows your unit to have natural look and incredible flawless hairline. Each 100% high quality human Remy Hair is individually hand-tied into the lace by our skilled hair professionals with the smallest and strongest knots and bleached (optional) to give a more natural appearance at the root of the hair. These techniques put together create a gorgeous lace wig unit with an invisible, flawless, and undetectable hairline !!!