First of all congratulations! You have an awesome Dental Office and FANTASTIC taste!
To redeem the code on the card that came with your brush you must visit here:
https://www.burstoralcare.com/gift
Once on this site, you enter your code and select 'get it now'
Here is how it will look:
You can then pick your color brush head and this will set you up for your subscription with BURST.
Our subscriptions ship every 12 weeks as standard and the cost for the head will be shown before you proceed.
After this you can enter all of your details for the shipment and subscription.
If you have any queries then please feel free to contact our customer service team through hello@burstoralcare.com.