There are 4 key elements of this whether you are 23 or 50. The rest is gravy. If you set these habits as early as possible in your life, your 50+ year old self will thank you so many times. Much of what we see around us as skin aging is preventable.
This collection has the 4 key things + 1: good daily sunscreen, high quality antioxidant (under sunscreen), a good moisturizer, a "vitamin A" cream at night (retinoid), and weekly gentle exfoliation.