How about Meladuse ampoules for dull skin during the changing seasons?

I took a selfie sitting by a sunny cafe window this weekend, but I was surprised to see that my complexion looked somehow dull, even with a filter applied. I remember my skin staying radiant for a long time even with just a light application of foundation, but lately, I feel like the darkening effect gets worse by the afternoon, which is really worrying me. So, I’ve added the Meladous Ampoule to my shopping cart to start a serious brightening routine. Many people around me have recommended it, saying the texture is light yet rich in nutrients, so I have high expectations; however, my biggest concern is whether the ingredients in the Meladous Ampoule will be suitable for my sensitive skin without irritation. For now, I plan to use it intensively, starting from the very first step of my skincare routine after cleansing in the evening, ensuring it absorbs thoroughly. I’m curious if anyone who has used the Meladous Ampoule has experienced good synergy when combining it with device treatments. What routine do you prefer the most to restore a dull skin tone?