I’m Turning 40, and I Don’t Want to Age Naturally

SkinCeuticals C E Ferulic ($185)

I apply a vitamin C serum every morning — it's the very first step in my routine after cleansing (and occasionally toning). There's a reason Skinceuticals C E Ferulic is a cult favorite. To this day, it remains the No. 1 dermatologist-recommended medical-grade vitamin C serum, thanks to its ability to effectively reduce the appearance of fine lines and wrinkles, even skin tone, and leave the complexion looking bright and radiant. Anytime I'm dealing with stubborn dark spots from hormonal acne, this one always does the trick — and it's worth every penny.