Number two. Colon cleanse is mostly a racket. I’m truly amazed that an actual RN or Nurse Practitioner told you to do such a thing. Blood cleanse almost certainly must refer to chelation of some sort. Chelation works strictly with things like zinc and copper. You cannot chelate Ascorbic acid.

Number Three. Your skin should return to normal eventually, as I cannot imagine that much long term damage could result from a single overdose of something that is nearly totally non-toxic.

Number Four. I would recommend that you leave the practice where you were told to use colon cleanse and go to a regular medical practice and get help.

This is a personal recommendation, and does not constitute advice.

Kind thoughts,

Hermes

Additional colon evacuation is unnecessary and unhealthy.
Your skin complexion will mostly return over time without a doubt, but it might be a long wait. You may have caused some permanent changes, but a single exposure is unlikely to do this. See a doctor with toxicology experience. Call a poison-control center or look online.