1.Use the right shampoo and conditioner. Use the right shampoo and conditioner. Curly hair can be prone to getting dry and frizzy, so it's important to choose products that don't cause damage. Using moisturizing, sulfate-free shampoo and conditioner to reduce frizz.Avoid silicone, which can prevent moisture from penetrating your hair.Some shampoos and conditioners are specially formulated for curly hair. It's not necessary to use one of these, but it's worth giving them a try to see if they help define your curls.Leave-in conditioner is a good option for curly hair, since it helps the curls stay smooth and moisturized throughout the day. Otherwise, try not rinsing out your conditioner completely, leaving just a bit in.Don't overdo the amount: 1-2 quarters worth of shampoo and conditioner should be adequate.2.Consider shampooing with conditioner. Consider shampooing with conditioner. Shampoo strips your hair of its natural oils, which are necessary for curls to appear vital and frizz-free. Conditioner is less harsh, yet also has a certain amount of cleansing action. Try washing with a conditioner regularly (however often you need), and using shampoo just once a week.3.Use cold water for your last rinse of your hair.Use cold water for your last rinse of your hair.