When a dark hair is tied to the base of a lace wig with a knot, you can see a dark dot on the skin, especially when the base is lace. Lace cannot hide the knot in the same way a monofilament base does. Bleached knots usually are only done at the front of the lace wig and it helps create the illusion that your hair is growing out of your head.（https://www.nerissahair.com）https://www.nerissahair.com