I'm mid 40's and have found for the last couple of years that any heavy foundation seems to age me. I have normal/dry skin. It's fair & freckly.
My everyday to go 'foundation' except it's not a foundation, it's actually a bb cream is Boots Seventeen BB cream, I only got it because it was reduced, as it was being discontinued, but it has been by far the best base I have ever used, it gives really good coverage, without being heavy at all. I ordered about 3 tubes and I'm on my last one. I wish I had ordered more!
Other than that if I do use Foundation I use L'Oréal Infallible Total Cover, it's actually quite lightweight whilst providing a good cover I only need a tiny amount.