While hair distributors in China or Brazil classify hair grades by names such as 3A, 4A, 5A, 6A, 7A…Hair distributors in Vietnam will classify them by terms like single drawn, double drawn, and super double drawn. Regarding the difference between the three types, Jen Hair will distinguish the following:
Single drawn: The tips are thinner than the top, making it look scraggly. Also, there are a lot of shortcuts along the way.
Double drawn: The solid length is guaranteed from top to bottom. 70% of the hair is of equal length, so the tips are as thick as the top.
Super double drawn: The highest and most luxurious quality, as more than 90% of the hair has the same length, which makes the hair so thick and natural.