I empathise with your predicament.
It is rumoured that the great late Michael Jackson (RIP) was faced with a similar predicament.
Getting rid of the rest of the pigment in your case seems a plausible idea & argument.
If you do not have any insurance & are strapped for cash, might i suggest lasers et al are not the way forward.
A simple bleaching technique using mono-benzyl-ether -of-hydroquinone
should suffice in the right hands but make sure it is a competent dermatologist
prescribing the same & monitoring the treatment.
Good luck & Godspeed!
Dr Praveen Rodrigues MD