My routine varies depending on my condition. The worse my skin is, the less product I use. When it's really bad, I sometimes use just a single moisturizer. This is because I have severe allergies; if my body isn't feeling well, I get allergic reactions or rejections even from the cosmetics I normally use, so it is an unavoidable choice for me.
I usually carry a gel-type product with me because it's great for hydration and controlling heat. When my skin is really dry, I apply an oil-based product once, wait about an hour, wash my face, and then apply a soothing gel and a moisturizer. I find that leaving oil-based products on for too long feels a bit heavy, so I use them by wiping them off as soon as they've absorbed a bit. I've found that this creates a coating on the skin, which seems to help control the dryness a little! My routine is quite simple, haha. I'm learning a lot, though.