Hanging from one peg is a long pair of scissors. You decide to take the chance. If you hair started growing again, you could just say "When" to stop it. You can't just go around the house with this hair getting in your way.
You take the long black locks in one hand. It's hard to keep all of the strands in your fist, but you manage. You position the scissors about two feet from your scalp and a long, heavy snipping sound echoes in the small mirrored room as you close the blades together.
You drop the severed feet of hair on the floor and reach for the doorknob. A tingling atop your head stops you, however. You glance at one of the mirrors and see that your hair has started growing again, faster than before.
"When," you say confidently. But the hair continues to grow. "When!" you shout. "WHEN! WHEN! STOP! ENOUGH!" Nothing you say seems to have an effect this time. Now the hair is once again falling past your knees, your ankles, and onto the floor. It starts to pool at the heels of your platforms. You take a step out of the growing pile and watch as the hair starts to unwind as more of it grows down to join it. "PLEASE STOP!" you shout into the mirrors. You look around for a reflection to give assistance as before, but there is only you.
A few seconds later, the tingling dies down and your hair finally stops growing. You don't wait for something else to happen. You grab up as much of the hair as you can carry and run out of the room. In the hallway, you dump the tresses onto the carpet and examine it. They slightly wavy black hair has a bit of shine, and while it looks pretty, it definitely is going to be a chore to deal with. Trying to cut it only made things worse.
You walk in a straight line down the hall, glancing back at the pile you've left behind until it has completely straightened itself out. Then you turn around and eyeball its length. It looks like it's doubled its previous size, meaning it's in the neighborhood of twelve feet long.
You sigh. How are you going to take care of it? Your mind recalls the hair accessories back in the room, but you're too scared they might carry curses of their own. Your best option is to get the hell out of this house and find a normal home with normal scissors, hopefully that will end your troubles.
But what about your skin? It's still pale like a vampire's. Your clothes can be replaced, but not your skin. Do you continue searching the house for a way to reverse your changes, or do you decide to cut and run while you still have a chance?