I have had 4 green peels for hyperpigmentation over 3 years. I got ok results with the 1st one, then no further improvements with the following 3. I went back for the further 3 treatments as per recommended by my beauty therapist. It took handfulls of courage to go back, as the pain involved was very severe. After the first treatment, I learned to take pain-killers prior to undergoing the procedure. If anyone says it doesn't hurt, they're a liar! I liken it to having glass and sand being sandpapered into your face. You look a scary fight for the days following, and when your skin drops off in chunks, it's enough to turn people off their food. The first treatment was mildly successful (slight improvement), however following treatments were indeed a waste of money.