and I love it. I have been using Drunk Elephant’s C-Firma Fresh Day Serum. It is one of the top Vitamin C serums I have tried. I love that the potent c powder and serum come separately. You combine them before the first use to give you the freshest bottle possible. This serum has 15% vitamin C and .5% ferulic Acid to improve skins evenness, bright, and firm. It also has Vitamin E and Pumpkin Ferment Extract. You should see diminished photodamage and increased radiance. If you want a highly effective Vitamin C Serum, I recommend Trying this one.