I hate the feeling of anything on my skin. I NEVER put anything on it... no face lotion or liquid foundation. Maybe just some Proactive here and there if I start to break out but other than that... NADA. If I do have a special occasion to go to then I'll use some light face powder. I recommend Smashbox's Halo Hydrating Perfect Powder. It is amazing!! It's so light yet it offers the right amount of coverage. You can find the face powder at all Sephora stores for $60. It's pricey but definitely worth it.
I'm pretty sure that I want to buy these products but I decided to do my research on "night serums" anyways. I came across a brand found at Sephora called Dr. Brandt. Apparently, this serum contains retinol which will make your skin firmer, softer and brighter. This one is more expensive than the Kiehl's products, but the reviews on the Sephora website sound pretty convincing to me. I have samples of the Dr. Brandt serum from before and so I'll try those out in a few days. I'll post which one is better in a few days :D