I'll be reading your answers to see what people say, but here's what I do. During the day, I use a facial moisturizer with SPF (i very between Avon products and stuff you can get at CVS/Target like garnier, aveeno, loreal etc). These are usually either SPF 15 or 30.
THen, on top of that I wear a tinted moisturizer instead of foundation - my all time favorite can be found at Target - it's called Boots#7 sheer tinted moisturiser and it's awesome. I've also tried lots of fancy expensive ones (right now am using Avon) but the Boots #7 is my favorite and gives the healthiest "glow" I think.
ANyway, with the layering technique my skin feels awesome and I hope it is protected sufficiently. Now that's during the regular week for regular stuff (I wrk full time outside the home so am mostly inside during the weekdays anyway) as well as during weekend for regular stuff.
If we are specifically doing an outside activity (like going to the beach) on the weekend or something, then I use either a neutrogena face, aveeno face or baby sunscreen formulas for max protection.
I'll be looking to see what other Mama's advise, I am always looking to try new things.