I am past mature, let's say OLD!!
I have tried about every kind of foundation and still the best for my skin is simply liquid and then a little blush...I am lucky, and have no idea why, but I do have skin that is younger than my years. Other than very basic care I have never used anything particular or done anything different. I even lived in the sun as a kid and a teen, being raised in SoCa. I will add, this isn't just about foundation, but my hair dresser was saying, just a few weeks ago, for us oldsters: if you can see your make up, blush, foundation or eye shadow you are probably wearing too much. the reason, as we age we should be downplaying any flaws in our skin and because our eye site isn't what it used to be, if we can see it, other can see it twice as much. Think of all the older women you have seen that look like they are going on stage or something?