Returns

Returns and refunds are handled by the seller

The Biology Code is an editorial reference, not a shop. You pay Amazon or the seller's own store, not us, so only they can accept a return, issue a refund or send a replacement. We cannot see your order, approve a return, check the status of a refund or ask a seller to hurry one along.

Whose policy applies

The policy that governs your purchase is the one shown by Amazon or by the seller at checkout and in your order confirmation. It can differ between sellers and between products, and on Amazon it can differ between an item sold by Amazon and one sold by a separate seller. Entries on this site may summarize a seller's refund terms as we found them on the review date, but sellers change their terms, and the version in force when you place your order is what counts. It is sensible to save a copy of the terms, for example as a screenshot or a PDF, when you buy.

How to read a refund policy

Refund terms often look similar at first glance and differ in ways that matter. These are the questions we ask when we read them for the Guarantees check, and they are useful ones to ask yourself.

• How long do you have, and when does the clock start? Look for the number of days, and whether it runs from the order date or from the delivery date.
• What condition must the product be in? Some sellers accept only sealed, unopened products. Others accept opened or partly used ones within a stated period. Check whether original packaging is required.
• Is it a return policy or a money-back guarantee? A return policy usually covers sending the product back for any reason within a set time. A money-back guarantee can come with conditions, such as buying a minimum quantity or contacting the seller within a set period.
• Who pays for shipping? Find out who pays the return postage, and whether the original shipping charge is refunded.
• Are there fees? Some sellers deduct a restocking or handling fee from the refund.
• How and when will you be paid? Check whether the refund goes back to your original payment method or arrives as store credit, and how long it takes to process.
• What is the process? Some sellers need a return authorization number or an email request before you send anything back. Note where to send the product, and keep the tracking number.
• What is excluded? Bundles, promotional items and subscription orders sometimes have different rules, and a subscription may need to be canceled separately.
• Where is the seller? Sending a parcel back to another country can be slow and costly, even if the policy technically allows it.

If a policy is hard to find, vague or contradicts itself, that is worth knowing before you order. It is exactly what our Guarantees status is meant to capture. See How We Review.

How to start a return

Go back to the confirmation email or order page from the seller or from Amazon and follow the instructions there, which usually need your order number. If you do not get a response, your card issuer or payment provider may have a dispute process. That arrangement is between you, your card issuer and the seller, and we cannot take part in it.

A return does not replace medical advice. If you have a health concern after using a product, please speak to a qualified clinician or pharmacist.

If you think an entry misstates a refund term

Sellers change their terms, and we can get things wrong. If you believe an entry on this site describes a seller's refund terms incorrectly, or out of date, email [email protected] with the link to the entry and, if you can, a link or screenshot of the seller's current terms. We will re-check the seller's own page. If we find an error we will correct the entry and note the date, as described on How We Review.

For delivery questions see Shipping, and for anything else see Contact.