How to adjust a facial when the skin reacts to an exfoliant

In my day-to-day, I run a skincare booth with clients who mix retinol at home and spa treatments. The problem that made me stop was this: a client felt a strong burning sensation during a gentle exfoliation, and her file did not mention recent retinoids. The symptom that made me investigate it seriously was that there was irregular erythema, tightness, and sensitivity when removing the product…