Potential side effects of a facial include redness and irritation, breakouts, dryness, and scarring.
Redness and irritation. This can occur from active ingredients like vitamin C or AHA/BHA acids. It can also occur from exfoliation and extractions. “Your skin may be pink or slightly red after treatment, but it shouldn’t be beet red,” O’Connor said.
Breakouts. You may notice breakouts after a facial since they are part of the body’s natural detoxification process, explained O’Connor. “Your skin and lymphatic system get deeply stimulated during the facial, and what isn’t seen at the surface is most often going to easily make its way up.”
Dryness.  Dryness can occur due to certain ingredients being used or harsh exfoliation. To combat dryness, use a gentle, non-irritating, fragrance-free moisturizer twice a day before and after your facial.
Scarring. This is a more extreme instance of a facial side effect. “Scarring can occur when too much pressure is applied to the pore during extractions, either manually or with a tool,” O’Connor said. If too much pressure is applied, there’s a high risk of damaging the outer layer of the skin.