Only Curls products and method. Curly hair needs moisture, lots of it - frizz means it's dry.
Sulfate free Shampoo
Sulfate free Conditioner on soaking hair - squish it in
Whilst still in the shower ... leave in conditioner - again on soaking hair and squish
Whilst still in the shower ... styling gel or cream - still on soaking hair
Do not squeeze out the moisture yet
Use a curl defining brush, separate hair into sections. Work bottom up brushing through the hair away from the head to give lift and gently shake to form curls.
Use a microfibre towel to gently squeeze out some of the moisture
Optional - apply mousse or gel, gently squish into hair being careful not to crush curls
Blow dry gently using a diffuser - DO NOT TOUCH THE HAIR. Start by moving the dryer over the hair, then cup the curls into the diffuser bowl, finally massage into roots to give lift. Allow 30-40 minutes on shoulder length hair. You can't hurry drying curls. If you do, you get frizz.
OR leave to dry naturally, this will take a couple of hours.
Once fully dry, gently shake with your hands. Optional a drop of hair oil along the lengths to soften the cast and give shine.
Sleep in a silk bonnet or on a silk pillow to get a decent 2-3 days out of the curls. I wash max twice a week, once if I can get away with it.
Well styled curly hair is gorgeous. A good curly cut (cut DRY, then washed and styled) makes a massive difference. It won't be cheap but you only need once a year (to be perfectly honest, as a student, I did my own by tipping my head upside down and trimming the ends, instant layers! But it was a lot thicker back then and I could get away with it).