I don't get much scalp grease but if I don't get the gel out of my hair with conditioner or no poo my hair will be tangly and look dirty. In the summer I can rinse and conditioner and do my routine but in the winter I have to work no poo or a cheap suave for washing through my hair to get off the gel.

I never got greasy but then I redo my hair daily.

You know they have no sulfate shampoos you can use so that you don't get greasy but you can still be gentle to your hair
Low porosity, medium texture.

If it smells good put it in your hair, if it tastes good spit it out!