Always use products that will help define your curls, and also keep away frizziness.
The 2 main products I can propose are Mira hair petrol and Maraby shampoo. To use the oil simply take a little and apply onto your scalp and then leave set for an hour and then wash out when done. For the shampoo take a little and lather nice hair. Make sure to give yourself a scalp massage whenever you shampoo