I Have 4 a hair and the best curl definer for me (and cheapest too) is homemade flaxseed gel (FSG). Google it. My favorite recipe is 1/4 cup FS with 2 cups water. Add 2 tbsp each jojoba oil and glycerin. U can use other oils if I want (ie avocado, olive oil, almond). Also I like to prepoo hair overnight with extra virgin coconut oil.