If you want to make your skin look young, the most important thing is sun protection. No matter where you are, skin that is often eroded by ultraviolet rays will definitely look much older than people who are not often harmed by ultraviolet rays. It is very necessary to form a good habit of applying sunscreen when going out, as well as physical isolation. You can wear an umbrella or a hat, and everything is fine, which is better than being tanned for no reason. Frequent sunburn can easily lead to wrinkles, accelerate facial aging, and unconsciously make yourself much older than others.
Besides sun protection, there is also exercise. Regular exercise will make your skin more elastic and enhance your skin's resistance. Replenishing water after exercise is also a key step. Keeping your body hydrated will partially ensure smooth skin. Drink more milk or eat more eggs to ensure the daily intake of protein.
Finally, of course, the use of skin care products and masks may not be useful, but some non-irritating products are still worth buying, which is better than useless. It's up to you to judge.