6 simple tips but pretty much common sense.
-Don't smoke- went to my 35 HS reunion last year. I could tell the long term smokers.
-stay out of the sun as much as possible
-eat right, stay away from sugar junk foods
-drink lot's of water.
-get regular excercise.
-lots of vitamins and supps
My wife is 54 and followed the above to a T all her life . Never a sun worshipper even as a teen. She has zero wrinkles, no age spots, no red marks. Lot of it is genetics though-her mom was the same way.
My wife wears zero makeup. Never did. I am 100% convinced makeup ages you even though it is supposed to protect your skin.