I've been having trouble every time I look in the mirror lately. Could you recommend some health functional foods?

Yesterday, on my way home from work, I looked at my reflection in the subway window and was startled by how dull my complexion looked. I used to be able to pull off an all-nighter without makeup looking bad, but lately, I've noticed my skin hasn't been as vibrant as it used to be. Even after applying expensive ampoules, they only lasted for a short time, so I'm convinced I need to start taking care of my skin from the inside out. Looking around, I see everyone taking health supplements that are right for them to maintain their vitality. I'm trying to start investing in myself before it's too late, but there are so many options, it's hard to choose. Do you have any health supplements you've consistently taken that have helped improve your complexion or condition? I'd like to know about health supplements you've actually used for a long time, not just through advertising. If you know of any products that are easy to get started with, could you kindly recommend them?