J.K. Rowling is describing the effects of a sunny summer in Ron and Hermioneâs skin, to which we can suppose Hermione is tanned. Other passages of the seven-part novel talks about Hermioneâs cheeks going pink â which could lead again to a white skin.
Baking Soda. Using baking soda is another way to remove rust from metal. You can make a paste by mixing baking soda and water. Make sure that the solution is pasty enough to adhere to the surface, then spread it onto the metal and let it sit. After the rust is loose, you can scrub it off.
Undiluted vinegar can be used to remove rust from metal surfaces. It reacts with the rust and helps dissolve it off from the metal. Soak the rusty metal objects in vinegar for about 24 hours, and then simply wipe away the surface rust using a rag. This method is very useful for removing rust from nails, nuts and bolts. If the object is too large, simply pour some vinegar on the rusted surface, and wipe with a rag after a few hours.