Curly hair naturally loses moisture faster than straight hair because the bends in each strand make it harder for the cuticle to lie flat. That is why curls can look dull even when the hair itself is healthy. Start with the basics: how often you wash, how much heat you use, and whether you add anything back after washing. A lightweight oil used on damp hair helps the hair look and feel more conditioned. Keep the routine short enough that you will actually repeat it. Consistency does more for the look of your curls than any single product.
Why do my Curls look dry?