u/RandomaticPersonQ

I use a retainer cleaner and when it makes contact with clothes, it discolors them with a brownish-like color reminiscent of a circle with its inner area being dark brown and the outer circle being lighter. The following chemicals that are in the retainer cleaner are in the image above

Which chemical/s are most likely to have caused this discoloration above? Asking for curiosity purposes. Also, is there a way to reverse the discoloration, preferably through affordable means? Thank you!