Welcome to the forum. As to cleaned coins. If that coin or any coin is worth only a few cents or dollars, it would not pay to purchase any product in an attempt to fix the cleaning. Also, purchasing a book on the subject would also not be economically logical. If for just one or two coins of average value, purchasing and running around to find miscellaneous substances to correct a cleaning is just not practical.
I would suggest placing the coin(s) on the inside of a kitchen window sill on a small piece of cloth. It will take some time but if in a household of normal cooking, the gases in the air from such cooking will eventually tone down those coins especially if Copper. Again it will take time. I've purchased many cleaned coins and have done exactly this for many times. Some have had to sit there for months due to the lack of kitchen cooking in the nice weather when bar-b-quing is the only way to go. And don't forget to rotate it from reversee to obverse occationally. I've got two Licoln Cents there now.
The window sill method is the cheapest method, takes time, dependant on how much and what is cooked in that room. Usually a steady breakfast of eggs, bacon, toast, etc. increases the effects.
Note a harshly cleaned coin will always be a cleaned coin but you can make it look a little more normal.