I use different products in the Circadia by Dr. Pugliese line, depending on the climate change of the seasons, but without fail I use the Light Day Sunscreen SPF 37 and the Vitamin C Reversal Serum every day. I also love the Cocoa Enzyme with Circadia’s oxygen treatment. My skin always looks and feels great afterwards.Want to read more? Subscribe to one of our monthly plans to continue reading this article.