I recommend SK2's True Skin Ampoule, which shows its true value as you age.

These days, when I wake up, I see white, flaky skin on my elbows, heels, and legs, and I'm busy trying to control the dryness on my body as well. I'm using vitamin C for my face, and the skin ampoule that synergizes with it is none other than SK-II Pitera Essence. Although it's a water-based formula, its concentrated nutrients make it the best ampoule I recommend. Smooth, elastic skin is a real luxury now that I'm in my 40s, and consistent use brightens my complexion, making me look noticeably younger. It's a great product that gives me the best, clearest skin condition, so I always recommend this ampoule to my friends. ^^