How It Works

Build Your Cart

Look for the 'HSA | FSA Eligible' badge on product pages. Eligible categories include sunscreens, skin care and beauty and wellness tools and devices.

Select Flex At Checkout

Pay with HSA/FSA. If you don't have your HSA/FSA card handy, you can also check out with a regular credit or debit card and submit your receipt to your HSA/FSA administrator for reimbursement.

Confirm Eligibility

You may need to fill out a quick telehealth questionnaire to confirm eligibility for some products. Simply complete the prompts and proceed to payment.

Enter HSA/FSA Card Details

Then, complete checkout. Flex will email an itemized receipt and, if applicable, a Letter of Medical Necessity. Keep these documents in case your HSA/FSA provider requests them.

Make Sure Your Covered

Some products are auto-eligible, but others may require a Letter of Medical Necessity to check out using HSA/FSA. Don't worry — if needed, you'll answer a quick questionnaire, and Flex will email the letter straight to your inbox. It's good for a full year of eligible shopping.