We offer a 30 day satisfaction guarantee. If you are not satisfied with your Zeno purchase and want to return your item, please contact us for an authorization number in order to return your unit. All merchandise must have all original packaging and materials in order to receive a refund. You will receive a refund in the amount of your purchase price. Tyrell warrants Zeno to be free from defects in material and workmanship. Zeno works best when the consumer first notices the signs of a new pimple. Zeno is a medical heat dose treatment device for the treatment of acne pimples in people with mild to moderate inflammatory acne. Zeno will not work when used on blemishes such as blackheads or whiteheads. Zeno should not be used by persons with nodular or cystic acne. Zeno is a clinically proven medical device, not a medication. Do not abandon a regular skin care routine. Zeno does not replace good skin hygiene. It simply takes over when pimples overwhelm the skin's natural balance. Tyrell encourages a consultation between a consumer and a skin care professional to facilitate an informed purchase decision by the consumer. Tyrell encourages consumers to contact a health care professional and stop using Zeno if any adverse reactions are experienced and further states that the absence of medical advice may worsen a reaction. Your Zeno is warranted to be free from defect in material and workmanship for a period of one year under normal use after its original purchase date. This warranty extends only to the original retail purchaser and only when purchased from an authorized Zeno retailer. If the product should become defective within the warranty period please contact Tyrell