I have coarse hair, and this is why, I am using Aveda Sap Moss nourishing concentrate as pre shampoo treatment and it does give my hair a healthy look. However, I have learnt from a few friends that it could be rather used as a leave-in as well. I wanted to know from somebody who has used this Aveda Sap Moss nourishing concentrate before and after shampoo, whether which method would suit my coarse hair better. I do not intend to make my hair look greasy, however, shine and luster is definitely something that I am looking for. Can you please advice, if it would be better used as a leave-in, or should I continue it as pre shampoo treatment? Thanks.