To make it easy - OutLash provides some guidelines about curl type, length, and thickness.
C Curl lash extensions provide a nice lift and is the most commonly used curl. This is the most natural curl that OutLash offers.
CC Curl is the perfect in between curl, giving you slightly more than C curl lash extensions but less than D curl.
D Curl is used to create doll-like lashes for special occasions or those who want more drama.
DD Curl lashes are for clients who want an extra dramatic look.
L Curl lashes have a straight base then transitions into the curl of a CC/D curl. L Curl is perfect for clients who have naturally straight lashes or those wanting to do a prominent cat-eye look.