Normally, one discount code is only applied for one offer. However, If the users put a vast of items in their cart, it is easy to use one coupon code to purchase items. It depends on wetbrush's policy, you can contact wetbrush via mail for your reference.

To avoid this problem, you should check out carefully wetbrush promo code before that promo code could be expired, some promo codes are tied to a minimum purchase, a first-time purchase, or tied to geography, and other reasons.

It depends! Normally, the percentage that you can save with that wetbrush Coupon will be shown right on the page, so you can see if it is applied sitewide or not. However, once you are not sure, try it right on their's products you want to buy.

At the time of updating, wetbrush has not applied Student Discount all year round yet. Check the official store and reach out to the customer support team to be clear.