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.
Scrub the rust away using a stiff, wire brush. This will remove flaking rust and as much of the surface rust as possible. You won't be able to get all the rust off if the rust is extensive. Wash the metal roof using trisodium phosphate in water at a ratio of 1 cup TSP per 1 gallon water. You can wash it by hand, using a sprayer attachment to a garden hose or a power washer. A power washer may remove more of the rust for you.