Due to the nature of our product, and federal health regulations, all of our hair products are final sale. We do not offer refunds on any hair product purchases. If you believe that you have received defective merchandise, please contact us immediately. We will NOT allow a return or exchange if the item has ANY signs of being used or tampered with. If you have any questions comments or concerns, contact NIKKI MAAR BEAUTY customer service directly at INFO@NIKKIMAAR.com