Don't worry: your face won't fall off. Not all peels will cause visible shedding of the skin. "Peels come in different strengths and types," Nussbaum said, adding that not all of them are created equal. Retinol peels are more likely to cause physical flaking, whereas glycolic peels are more gentle and won't.
However, if you do experience peeling following the procedure, don't fret. It's totally normal; exfoliation can happen gradually over the course of a few days, and shouldn't last than more than four to five days.