Which of the following treatments would be the be the best for treating dark knuckles?

My toe knuckles git much darker a few years ago due to wearing tight shoes and they are darker than anywhere else in my body. I am trying to choose a treatment since there are many expensive options: 1- Chemical peels: There are many kinds but Vi peel seems to be mentioned a lot. 2- Lasers: Tatto removal laser was ineffective so now I am considering resurfacinglasers such as CO2 and Fraxel. 3- Microdembrasion: I a not sure if this is performed anywhere other than the face. 4- Cryotherapy.