To get a little more science-y, skin purging occurs because certain skincare ingredients increase the rate at which your skin sheds its dead cells. When the skin renews itself faster, it brings underlying impurities—like oils, bacteria, and dead skin cells—up to the surface, where they can lead to breakouts. It’s your skin’s way of doing a mini “spring cleaning,” even if it looks a little messy at first.

Here are some of the common ingredients that can cause skin purging:

Retinoids (like Retinol and Retinoid-based products): Retinoids are known for their ability to speed up cell turnover and reduce the appearance of wrinkles, acne, and hyperpigmentation. But when you first start using them, they can cause your skin to purge as the old cells are sloughed off.

Exfoliating Acids (AHAs and BHAs): Acids like glycolic acid (AHA) or salicylic acid (BHA) work wonders for clearing clogged pores and exfoliating the skin. However, they can initially bring impurities to the surface, causing purging. 

Vitamin C: While Vitamin C is great for brightening and fading dark spots, it can also cause a purging phase as your skin adjusts to the increased cell turnover.

Chemical Peels: If you’ve recently started using a chemical peel or started seeing a professional for one, your skin might go through a purging phase as well.