Do you have any health functional foods that you take specifically for your skin?

These days, a lot of people are taking health functional foods. As I'm getting older, I feel like I need to take better care of my inner beauty, so I'm thinking about taking some supplements that are good for my skin, but I'm not sure which ones are good. If possible, I'd like to try some that also help with skin elasticity. Has anyone tried collagen? There's a lot of talk about the effectiveness of oral collagen, but I'm curious if anyone has experienced any results. Besides collagen, there are many health functional foods that specialize in skin care. If you know of any good ones that are helpful for skin care, please recommend them!