How about Meladuce Ampoule for dull skin during the changing seasons?

I took a selfie by the window of a sunny cafe this weekend, and I was surprised to see my complexion still look darker, even with a filter. In the past, a light layer of foundation seemed to keep my skin looking brighter for a long time, but these days, I feel like my skin is getting darker by the afternoon, and this is really bothering me. So, I've been adding Meladuce Ampoule to my cart to start a serious whitening routine. Many people around me have recommended it for its lightweight yet nutritious formula, so I'm excited. My biggest concern, however, is whether the Meladuce Ampoule's ingredients will work well with my sensitive skin. For now, I'm planning to use it intensively, starting with the first step of my basic routine after washing my face in the evening, ensuring thorough absorption. I'm curious if anyone has experienced the synergy of using the Meladuce Ampoule with a skincare routine. What's your favorite routine for restoring dull skin tone?