today let us study the double knots and single knots.  from the pictures, double knots is more darker knots than single knots. they are different method to make the wigs. normally, hairline perimeter we use single knots, it will make the hairline more natural, very thin density hairline. the rest we use double knots, it will make the wigs strong and durable, avoid shedding.

From the pictures, u can see this very thin density hairline. these wigs just our stock wig. many clients send us pictures about their needing hairline, we can copy that by the pictures