My skin is so dry these days, so I'm looking for health functional foods.

Yesterday, on my way home from work, I stopped by a cafe and was shocked when I saw my face reflected in the window light. Before, even after working all night, my skin would quickly regain its vitality the next day, but now I felt a dullness that even makeup couldn't hide. I realized that applying cosmetics alone wasn't enough, so I realized I needed to start taking care of myself from the inside out. So, after work, I spent a long time searching online for health supplements, comparing them. Honestly, there are so many options, it's hard to decide which one to choose. My friends were already taking health supplements like collagen and multivitamins, but I wonder if I'm just a little late to the game. I'm still a beginner, so even looking at the ingredients list doesn't tell me what's good for them, and I'm curious to see if I can really feel the difference if I take them consistently. Are there any health supplements you've actually tried that have helped your skin recover? Could you give me some advice on how to choose the right one to avoid disappointment?