I understand. Many people are allergic or sensitive to food, vitamins, and herbs. I was too.
A good idea would be to start off slow with supplements one at a time. This might cause some aggravation sometimes referred to as die off period.
At my local gym I used the sauna. Many toxins are released throuogh sweating. DR. Gloria Gilbere in my post below recommends colon hydrotherapy. I don't know how long you have had MCS or how you got it so more information would be helpful.
You mentioned face cream. Do you have skin problems? Are you currently working with a doctor?