Moisteriser AND serum, why both? Tell me the sciencey bit.

[LibrasBiscuitsOfFortune]

Why do you need both serum and moisteriser?

I think the science you might be interested in is economics

lol I am perfectly happy to accept that as an answer as I have to admit I am confused...
Mainly over all the fuss on the Protect and something range from Boots.

Here's a better idea..try Purity Organic Skincare's Serum and Mask .. its won best anti-aging cream from News of the World and you can use it as a mask or as dab it on under your makeup or moisturizer for some extra protection..sorta more like two for the price of one..its full of vitamin E ... anyway I love it and its only 8.99 and Mumsnet is running a prize draw this month where you could win it.. there are no chemicals which cannot be said for the other kinds...

I had facial yesterday and the woman explained that serums have smaller molecules than creams if that means anything.
Means fuck all if you believe that nothing will penetrate the skin anywya.

Who knows ??

thanks for all the comments. So it sounds like a swizz.