Thats a question I had always wondered was if the Asari facial markings were something they applied themselves, or were like birth marks they had based on parentage, or tatoos that were applied based on familial lines etc. I also wondered if they were permanant or could be taken off, in the case of Peebee who is a character I love, I assumed her facepaint was applied or a tatoo- however fun fact there is a mod that removes it where you can see her face without the black streak. (I like her character either way honestly)