I have been using Beauty Everlasting Vitamin C Serum for some time. It is a brand that's sold on Ebay, but it's just as good as Sephora or Walgreens. It's applied under your morning and night lotions. I found it to be very effective in terms of removing dead and dull skin.
People sometimes forget that skin needs vitamins even if it's applied topically. This product is for people of all genders because everyone needs vitamins. Not only does it keep your skin from looking old, but it also boosts the efficacy of sunscreen. For 10 bucks, I would definitely add this to your daily moisturizing routine.