You can update the products in your subscription through your Synchro account.
To edit your subscription products:
Login to your Synchro account.
Select “view and manage order.”
Open the “subscriptions” tab and choose the subscription you’d like to edit.
From there, you can add a product, change the number of products, update your delivery frequency, or click “swap this for a different product” to change the product in your subscription.
Please note that if your order has already processed, changes will apply to future orders only.