Good Genes All-In-One Lactic Acid Treatment Serum

Sunday Riley's best-known product, a lactic acid treatment that resurfaces skin and fades the look of dullness and dark spots with regular use. Licorice root extract and prickly pear extract are included to help offset irritation from the acid, and arnica is there to calm redness. Meant to be used a few times a week rather than daily, especially when you're just starting out.

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