Premade lash fans are a kind of grafted eyelashes produced in advance by the eyelash manufacturer. It is similar to easy fan eyelash extensions, but does not require the lash artist to rub the eyelash extensions to achieve the effect of eyelashes blooming. According to the number of eyelashes on a premade fan, 2 eyelashes are called 2D, 3 eyelashes are called 3D, 4 eyelashes are called 4D, and so on. According to the curvature of eyelashes, it can be divided into C, D, J, B, CC, DD, L, LC, LD and so on.