I don't think that any "skincare regime" is going to make a bit of difference in the long run.
Just wash the dirt off your face (use a mild soap), use sunscreen, and eat healthily. If you get acne, try experimenting with your diet - i.e. cutting out dairy. If your skin gets dry, moisturize it, and if it tends to get oilier, blot the oil off (if you wash it too much your body responds by producing more oil).
The people I know who have the healthiest looking skin also have the healthiest lifestyles. The people I know who have the least healthy looking skin live a sedentary lifestyle and live off fast food.
Personally I wash my face when I remember to do so, like when I take a shower. I have pretty healthy skin and eat mostly vegetables and drink a lot of water, so that's probably what does it.