Curl (7)
'curl' is the definition.
(synonyms)
This is all the clue.
(Other definitions for ringlet that I've seen before include "A curl - kind of tingler" , "Cluster of hair" , "sort of lock" , "Curled lock of hair" , "Curl of hair; butterfly" .)
'curl' is the definition.
(crimp is a kind of curl)
This is the entire clue.
(Other definitions for crimp that I've seen before include "Fold or press into ridges" , "Compress into small folds or ridges" , "tight lock" , "Connect by squeezing together" , "Curl hair tightly" .)