Can I use this peel if I already use retinol or other exfoliants?

Combining this 20% glycolic acid peel with other potent exfoliants or retinoids on the same day is not advised, as it significantly increases the risk of irritation, redness, and compromising your skin barrier. Glycolic acid and retinoids both accelerate skin cell turnover, and using them together can overwhelm the skin.

A safer approach is to space them out. For example, you might use the glycolic acid peel once a week on an evening when you do not use your retinol product. On the days following the peel, focus on hydration and barrier support, and perhaps skip other exfoliating products like scrubs or salicylic acid cleansers. Always listen to your skin; if you notice increased sensitivity, dryness, or peeling, scale back the frequency of the peel or pause your retinol for a few days. Introducing the peel cautiously—starting with a shorter application time, like 2-3 minutes, once every two weeks—is essential when your routine already includes active ingredients.