I generally think that curls should not be one length because its hard for curls to really have the movement they need when all one length.
Layers allow the curl to move, bounce and be good. But, there is no steadfast rule for everyone and every persons hair.
Rae ~ 2c/3a ~
"The Longer the Hair, the Bigger the Blob."
Porous, very dense but fine hair. Medium everything else.
Wife to a 3c Curly Guy
Mom to a straight and a curly.
CoWash: Trader Joes TTT
RO: SM Gold label condish
Home Made FSG, followed by SM Smoothie, Plop, then AG Curl trigger, and diffuse. Finish with SM Hold and Shine spray.
Always wash upside down.