CoguFlex is backed by the brand's own 60-day money-back guarantee from the date of purchase. Per the brand's stated terms, if you're not impressed with your results, you can contact customer support within the 60-day window to request a full refund.
Because refund processing (including any return requirements and timelines) is handled directly by the official retailer, refer to your order confirmation email or the official order page for the most current, binding refund terms.