Erin decided to try her potion. She measured 200 ml of it, and rinsed her hair in it. Her hair turned a pretty ravenclaw blue. 'Cool!' Erin thought to herself. She then filled a vial to turn in, and saved the rest for a rainy day. She cleaned up her workspace, put the labled vial on the professor's desk with the rest, and left to go work on her homework.