OFFER: Get Hair Logic now for only $39.99 + FREE S/H and includes a 6 Week Money Back Guarantee. This limited-time offer isn't available in stores, so order now! GUARANTEE: Hair Logic? has an extended 6 Week Money Back Guarantee. If you?re not satisfied with your Hair Logic results, simply send it back and you will receive your money back, less shipping and handling. Mistreatment, misuse, and intentional abuse of Hair Logic are not covered under the 6 Week Money Back Guarantee.