The price of this Elixer 7.9 Youth Intensifier drops from $48 to $26.40 to $21.40 when you enter code WELCOME at YvesRocher.com. Per the instructions, add one drop to your skin before your normal day and evening creams to boost their anti-aging effects. With your order, you get to choose a free gift (options include a 5pc container set, a carry-on bag, or a set of 3 travel-size products). Shipping is $4.95 or free on orders over $40. Sales tax is charged in most states.