Givenchy's pH-reactive Le Rouge Hydra Balm is on rare sale at QVC. Plus, new shoppers get two balms for under $40 when they use a promo code.

Luxury brand Givenchy is offering a rare discount on its Le Rouge Hydra Balm Black Lip Duo at QVC. The pH-reactive lip balm creates a customized berry shade based on the wearer's natural lip chemistry ...