Freckles are more concerning in winter... Has anyone tried the Meladuce Ampoule?

Ha... I went out for a bit this afternoon, and the smell of bungeoppang (fish-shaped bread) on the street was so sweet. But I didn't have any cash in my pocket, so I just trudged back. It's already cold outside, and I feel even more timid...ㅠㅠ I guess the weather's really dry these days. Indoors, the heater makes my face itch, and after washing my face, my blemishes stand out in the mirror, which stresses me out. I was looking for a home care product that would be good for my sensitive skin, and I was recommended the Meladuce Ampoule. My skin is so sensitive that I worry a lot every time I change my cosmetics, but I'm considering the Meladuce Ampoule because it's supposed to brighten without irritation. My current routine involves layering the Meladuce Ampoule on top of a moisturizing base, but I'm not sure if it'll help with the dryness... Could anyone who has tried the Meladuce Ampoule share their experience and see if it works well for my sensitive skin? It's the end of the year, so I want to manage my life properly, but I'm so timid that it's hard to make decisions... Please help me!