I struggle with dark marks so naturally, I was super excited in trying the 10% Vitamin C Serum. I love the consistency of the serum, and the effectiveness. I started seeing a difference after 2 weeks of use. The dark marks are starting to fade and that has truly been amazing to see. And with it being summer time now, I love to use the Vitamin C together with the Hyaluronic Acid to get that extra hydration. It keeps my skin feeling smooth and looking glowy. I highly recommend trying these out and I’ll definitely continue using them.