Unfortunately, it is not possible to use multiple discount codes — you can only apply one discount code per order.
What about the 10% subscription discount?
The 10% subscription discount is applied automatically at checkout for all subscription orders.
This does not count as a discount code, so you can still apply one additional promo or referral code on top of your subscription discount.
If you’re unsure which discount is best for your order, feel free to contact our Customer Experience team for support.