In case you enter a discount code during checkout that doesn't exist or isn't currently active, then you can see the message: “Unable to find a valid discount matching the code entered”.

Yes, you must have a valid Trisonic.com account in order to buy an item at the Trisonic.com site and use your coupon. During the process of buying an item on our site, you can use your Trisonic.com account to see more of our services.

Of course not, most coupons may be used only by you when you received them directly from Trisonic.com. As the Trisonic.com coupon includes your User ID, it cannot be resold or transferred in any way.

To avoid this problem, you should check out carefully Trisonic.com 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.

There is no certain number for the frequency of releasing coupons from Trisonic.com. But, most of the time, there will be at least one available. Special Discount Days such as Black Friday, Cyber Monday, Back to School Sale... come with many coupons.

Yes. The old coupons from Trisonic.com will be kept on the page if it has not expired. New coupons will continuously be updated.