How do I persuade a client to change their treatment plan when their skin barrier is unstable but they still want to proceed with an acid-based treatment?

Today, a client booked a mild peel, but upon arrival, her cheeks were red and felt warm to the touch. She also mentioned she had just used a high-concentration retinol last night. From a sales perspective, I could have proceeded with a low-concentration treatment, but I determined that her barrier condition was not suitable. My process was to first perform a patch test for observation, then…