Generally, the system only lets you apply one promo code at checkout. However, AliExpress is a bit unique because you can often layer different types of savings. For instance, you might be able to use a platform-wide code alongside a specific store coupon or apply your Coins for an extra reduction. It doesn't always work for every item, but it is definitely worth trying to stack them during big events like the Anniversary Sale.

In my experience, you can't double up on the actual promo codes (the text strings you type in), but those codes can usually be applied on top of items that are already marked down in a sale. If you have Coins or seller-specific discounts, those often deduct automatically or stack with a single promo code, depending on the specific terms set by the seller.

It usually depends on the promotion. While you typically can't enter two different promo codes for the same basket, AliExpress does allow layering in some cases, such as combining a sitewide code with a seller's store-specific discount. It’s always a good idea to check the small print for the specific code you're using, as some exclusions apply to heavily discounted Super Deals.