Please don't get it done at any salon, ONLY a licensed practitioner! A bad chemical peel can lead to permanent scarring..which is really dark and patchy known as a "chemical burn"
Go to a well-known clinic, during a peel u're derm shud be right there..as he/she is the one that needs to instruct the therapist to remove and neutralize the peel..
Make sure they try an allergy patch, make sure they prep u're skin, make sure u face no discomfort, (feels like a mild bleach) and make sure u're derm is watching u closely..