I remeber well a scene from a TV documentation (I th8ink it was SPIELGEL TV) where Marianne met a lady with nice looking dark hair and it was clearly to see and also ensured by the lady that even Mariannes very ends were healthier and thicker that that of the lady.
Marianne has grown an incredible treasure and she is the best amassador for longhiair one can think of: beautiful and intelligent with a fantastic mane of healthy hair.