Hydrating serums seem to have become a non-negotiable part of my skincare routine. I like the intense hit of moisture that they provide, I like that they are (almost always) lightweight and fresh feeling and quick to apply, I like that they can plump and smooth the skin without leaving any residue and I like that they can be slipped on before pretty much any face cream or standalone SPF.
I’ve tested dozens of hydrating serums now, and I wanted to start writing up my reviews before I lose track of which ones work best. I think I’ve already written about quite a few, including the very affordable one from First Aid Beauty and the great value mini-vials of Hyaluron-Filler Concentrate from Eucerin, but the latest serum I’ve used to the very last drop is the Super Aqua-Serum from Guerlain. This is – unusually – an incredibly rich serum. You know how I just said that hydrating serums were lightweight and fresh feeling" This one doesn’t fit that description at all – it has a satisfying heaviness to it and even without a moisturiser layered in top I can feel the moisturising effects eight, ten, even twelve hours after application. I have tested this serum to the nth degree – on its own, beneath loads of different face creams, straight under foundation, as a night treatment – and it works perfectly whichever way you decide to use it. Properly plumped skin, and although there’s more of a residue than you’d g...