Buy 2 Specially Marked Herbal Essences and Get a Free Haircut offered by Herbal Essences. It’s very much like mailing in any rebate form. Find specially marked bottles that have a green sticker on the front featuring the free haircut offer like this picture. The shampoo and conditioner collections include Hello Hydration, Body Envy, Long Term Relationship, Color Me Happy and Totally Twisted. Simply fill out and print the form with the two UPC codes, and they will receive a voucher for a free haircut. FAQ is here.