I am 49 and two things I have done since my mid 20s has been Oil of Olay and sunscreen.
My skin started getting much drier a couple of years ago and I am having issues with breakouts ( which I have never had before ). I use ProActiv for a few days when I need to during a breakout. It is amazing.
Beyond that, I have a winter routine and a summer routine.
Mornings :
In the Winter I use a moisturizing witch hazel to "wash" my face. Really just a wipe down. Either this one or Dickinson is great. My face just gets too dry if I wash both day and night in the Fall - Spring.
http://www.drugstore.com/thaye.....oner-unsce
After that, I use a retinol derivative, vitamin C, Ferulic acid, and hydration combo in one. This little bottle last me 2-3 months and I use it on my neck and chest :
http://www.amazon.com/gp/produ.....#038;psc=1
moisturizing sunscreen ( I use the 50 PF ) by Neutrogena
http://www.soap.com/p/neutroge.....e&
Night
I use the Clarisonic with Cerave Moisturizing cleanser ( this helps my dry skin more than Cetaphil ) .
I put on some ROC nighttime cream, my mixture again, some Oil of Olay over it and I am done. ( I find that I need the extra Oil of Olay at night. Sometimes if my skin is really dry, I will use Bio-Oil instead. )
Honestly, it took me about a year to figure all this out. I tried a lot of things before I settled on this ...but it is working for me.
Good Luck