Curl Definer is a heat-free styling tool for naturally curly hair. Use on wet hair to achieve well-defined, long lasting curls... consistently. Beloved by EVERY curl type and tested across the full curl spectrum, our patent-pending Curl Definer is the most sculptural and effective curl styling tool you've ever seen. Curl Definer won't give you curls if you don't have curly hair, but if you do, it gives you your best curls ever.