My go to Serum of late has been the Lancôme Genifique Serum. Having tried it a few times in tester samples I opted to purchase the large 75ml bottle as it worked out cheaper per ml. This is a tip I do recommended, if you know you like a product it is often cheaper to spend more up front and buy the larger size.
Now I’m not a huge fan of the Lancôme moisturisers, but wow.. this particular Serum is excellent. It has quite a runny consistency and a little goes a long way.
Application is through a pipet so it stops you using / pouring out to much product and wasting it.
My skin always feels softer and much more hydrated when I use Genifique. Fine lines become less visible and my skin is much more plump.
Remember serums and moisturisers have different purposes. Your Serum penetrates in to the deeper layers of the skin, helping to nourish and delivers active ingredients directly to where they are needed. Your moisturisers hydrates the upper levels and acts as a barrier locking the moisture. Don’t confuse the two, and yes you do need both!