Unfortunately, all sales are final meaning there are to refunds, returns, or exchanges. However, if there is something wrong with your purchase, you must contact us right away to be eligible for a refund.
Because our products affect all individuals differently, effectiveness is not a valid reason for returns. We reserve the sole and exclusive right to deny any refund for any reason. We also retain the exclusive right to deny service or sales to any person(s), business, or entity for any reason.
You can always contact us with any question at kb.dfsengineer@gmail.com.