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Birchbox has successfully revamped my skincare regimen. I love being introduced to new products -- mostly to try them, partly because I have fun things to experiment with when I travel. The Blue Copper 5 serum is a stand-out, and as soon as I received it years ago, I knew I had to incorporate it as a permanent fixture in my skincare routine. It's so cooling, and makes my skin look and feel even and supple. I use it in the mornings as soon as I get out of the shower, underneath my spf and daily moisturizer.5