Invisibility potion

I arrive to a large testing room with a gigantic glowing pad on the floor. There is a large terminal hooked up to it where I see Ming Zhao typing away. She smiles as she sees me.

"Good! You're here! I present to you my my formula of invisbility! A potion that can instantly turn a person undetectable to the naked eye!"

I can hardly believe what I'm hearing. "You made a real invisibility formula?"

"Of course!" She says. "Can you imagine how this could revolutionize the world? No one can see you? It'll be a marvel!"

I stop for a minute. "So what do you need my help for?"

As Ming Zhao starts to use the invisibility formula, she flicks at its syringe.