For those of you who take care of your inner beauty, what do you eat?

I've noticed a lot of people taking care of their inner beauty these days.

Just looking around, there are people who take collagen regularly.

I actually think that eating well and sleeping well is the best thing.

I haven't really taken care of my inner beauty until now, but it made me wonder if I should start doing it from now on.

I'm curious what supplements everyone takes~