Interlocking Hair Extensions use cornrows (also known as French Braids) as a foundation. The pre-braided or curly hair is interlocked using a latch hook tool to give a client a full head of braids or curly hair. This procedure takes about 2 to 3 hours to do a full head. this technique offers clients a style that would normally take 8 to 10 hours to do had they been braided individually.