You got a boo boo?

Put this shit on it. It's an old iodine tincture ampule, probably WW1 vintage. If you look really carefully, there's a red square with "POISON" and a skull and crossbones right in the middle of the field of text.

The antidote for ingestion is an egg white and flour in water.

One more step, and you'd have a biscuit...