Mixed texure hair, What products do i use in my baby’s hair?

Lola

My son is Puerto Rican and black but his hair is really fine like extremely fine curls. I’m not sure what to put in his hair style it and keep it healthy. He’s almost 1. I used my hair products that I used as a child but it just made his hair really really greasy sooo I’m trying to see what works for his texture. First time mom btw lol