At Amazon, select hair care products
are buy one, get second 50% off
. Even better, you can order most items via Subscribe and Save for an extra 5% off
and free shipping
. (All applicable discounts are reflected at final checkout; you'll have to add two of the same item to qualify.) Combined, that puts several combos at the lowest total price we could find, especially compared to retail store prices. Choose from brands such as AXE, Nexxus, Suave, and Tresemme. Note that stock may be limited for some items.
A best bet is
two Nexxus Humectress Luxe Ultimate Spray 5.1-oz. Bottles for $8.51 with free shipping via the above discounts
. That's $4.26 per bottle the lowest total price we could find for this quantity by $18.
Be sure to cancel Subscribe & Save once your order ships to avoid being billed for subsequent shipments.