*Offer valid 10/15/2026–10/19/2026 at 11:59 PM PT, or while supplies last. Buy two eligible items and get 50% off the lower-priced item. For purchases of four or more eligible items, 50% off applies to the lower-priced item in each additional pair. Any unpaired item will be charged at its regular price. Valid on one-time purchases only and limited to eligible serums and treatments featured on the promotion landing page. Discount automatically applied in cart. Cannot be combined with other offers or promotions. Exclusions apply.
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