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Why You Shouldn't Mix Multiple Types Of Retinoids Together
Retinols and retinoids are considered some of the most dynamic actives around, so it's easy to see why so many brands rely on them as their star ingredient. However, there are some skin care practitioners who are sounding the alarm about the potential risks of mixed retinol or retinoid usage.
This ingredient is often listed in skincare products under various names, like retinaldehyde, tretinoin, adapalene, and tazarotene, so you might not even realize you’re applying different kinds of retinoids. Cosmetic doctor Mervyn Patterson says, “The more retinol you put on, the poorer the [skin] barrier function becomes,” so be aware of how much you’re using.
Retinols can act unpredictably when used with other actives, including ingredients like benzoyl peroxide and exfoliating acids. To preserve your skin barrier, use a steady rotation of actives in your routine, and Dr. Scott Paviol says, “If your routine contains AHA/BHA in addition to retinol, wait to use your retinol about an hour after AHA/BHA application.”