I think it's important to drink enough water.

One of the most basic yet crucial habits for healthy skin is adequate hydration. I make a point of drinking two liters of water a day. It goes beyond simply quenching thirst, and it deeply moisturizes my skin. Rather than drinking a large amount all at once, I find it most effective to drink a cup in small doses—one cup upon waking up, one cup on the way to work and during work, and one cup before and after meals. This hydrates skin from within, preventing dryness and improving makeup adherence. It also helps prevent dullness and fine lines. Just drinking water can help smooth out skin texture, so these days, I feel that consistent hydration is as important as applying makeup. It's a small habit, but simply drinking two liters of water a day is the easiest tip that can make a huge difference in your skin's health.