A Vitamin C serum in the morning skincare staple with major anti-aging benefits. There are plenty of reasons why skin Cuticles C E Ferulic is the most sought-after vitamin serum of all time. It's been vetted by scientific studies and has thousands of five-star reviews from derma store shops. But it isn't the only powerhouse Vitamin C in the brands, which also includes Silymarin CF. All three formulas help prevent and correct the damage from oxidative stress and are backed by serious science.