Flex is an HSA/FSA payment platform integrated into Tano's checkout. It allows you to pay directly with your HSA or FSA card, or purchase using any method and apply for reimbursement afterward. For products that require a Letter of Medical Necessity, Flex generates one automatically — at no extra cost to you.

At checkout, select the "Flex | Pay with HSA/FSA" option and enter your card details. If you're using Shop Pay, check out as a guest first to access the Flex payment flow. Your pre-tax funds are applied immediately — no reimbursement steps needed.

A Letter of Medical Necessity is documentation confirming that a product is medically appropriate for treating or managing a specific health condition. Some HSA/FSA providers require an LMN before approving reimbursement for skincare products used to manage conditions like eczema or rosacea. Flex issues this automatically through their platform.

This depends on your specific HSA/FSA plan. Products primarily used to manage skin conditions may require an LMN from some providers. During the Flex checkout or reimbursement flow, Flex will automatically identify which of your selected products require an LMN and issue the necessary documentation. No action is required on your part beyond completing the Flex flow.

If your card is declined, complete your order using a standard payment method and select "Get Reimbursed" from your order confirmation page. Flex will walk you through the reimbursement claim process, including issuing any required LMN documentation.

Yes. If your HSA/FSA balance doesn't fully cover the order total, Flex supports split payment — applying your available pre-tax funds and covering the remainder with a standard credit or debit card.