It's a $20 gift card. There's a code on the back that will give you $20 off whatever purchase you make. And the same code can be used multiple times, so you can get $20 off your next purchase, and your next, up to however many they allow.
It's a gift card you can use online at The Golden Beauty Collection website for their skin care products. You can't use it at any other site or store nor for anything other than their skin care products.