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.
How to Remove Rust from Old Tools. For those who want to clean rust from a particular object, vinegar is the best solution. Vinegar (acetic acid) removes rust magically, like you see in the pictures. You can also remove rust from bronze objects, jewels, etc. The method is simple: take a bowl, put the rusty tools inside and pour vinegar until you cover them. For objects with thick rust layer you must let the vinegar act up to 2 days. After removing the objects from the vinegar, rust will turn into a viscous film that can be easily cleaned with a strong water jet. If there is any rust left, remove it with a wire brush. Wash the tools with soap and water to remove any remaining vinegar trace. This is the method we used to remove rust from the tools in the pictures above.