FYI: This Is the Only Anti-Aging Product You Need in Your 20s

Just one mindless walk down the skincare aisle at your corner drug store is enough to give you decision fatigue, especially when it comes to anti-aging products. If you'd rather have someone tell you exactly what to do every day to have flawless, glowing skin, board-certified dermatologist Sandy Johnson is here for you.

"Every non-pregnant person should use sunblock and sun protection during the day and apply retinol or retinoids at night," she point-blank told Man Repeller. "Retinol/Retin-A and other retinoids are the best creams to prevent skin cancer and aging changes to the skin." Put simply, retinoids are all vitamin A derivatives that promote cell turnover by exfoliating your skin and helping you build collagen. The secret is in the exfoliation: This helps clear pores, diminish the appearance of fine lines, and even prevent wrinkles from forming in the first place. One study even found that retinoids may even help prevent skin cancer.