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 periosciences's policy, you can contact periosciences via mail for your reference.

It depends! Normally, the percentage that you can save with that periosciences 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.

Our advice for you to use periosciences Coupon effectively is to choose the right day.
Like thousands of other consumers, the time of promotion is when they choose to
shop at periosciences, so take advantage of coupons released on those days to save.

All deals from Promotion Programs of periosciences are collected here. For each certain occasion, its coupons will be on the top of the coupon list, and surely they always come with an expiry date.

The sitewide discount from periosciences is applied on certain purchases. For Year-End Deals, the store may have its own requirement to offer you a sitewide discount.

Let us know via email, our team will confirm with periosciences to fix and remove all Promo Codes, Coupon Codes, and Deals that aren't working.