Today I received a Salicylic acid peel 20% at Plastic surgeons office. Is this normal? (fair-medium Asian skin).

Initially red and swollen, then sunspots, freckles and scars are very dark, skin is brown and tender. Doctor did a poor job of communicating to me what I should expect and I am now very anxious. He did not neutralize (was he supposed to?) sent me out of the office while my skin was still frosting. I went home and washed my face, but worried since my skin felt hot and burning on the 30 minute drive home and has turned very dark brown. I went to a very reputable surgeon. what else should I expect?