25% Off Lip Plumping Oil & Buy 1 Get One Free + Free Shipping - $14.95 (reg-$20) This lip-plumping oil set will transform your lips! This luxurious oil is specially formulated to provide you with a plump, luscious pout. Infused with clear lustre and reflective particles, it also delivers a gorgeous shine to your lips, making them look irresistibly attractive. 1 day & 1 night oil.