I'm currently using Superdrug Simply Hydrating Serum which costs about ?3 a bottle and is rather marvellous. It does everything you want a serum to do for dehydrated skin - plumping, smoothing, hydrating, making skin feel like its had a good drink. I actually prefer it to the Vichy Aqualia serum that Sali Hughes raves about.
I use the moisturiser from the same range - Aqua Hydrating SPF 15 Day Cream and I like it a lot, although it could possibly be a bit richer. It is impossible to find in shops although is always available on the website. Superdrug really need to sort out their distribution.
I am just curious about what other people use to treat dehydration (fine lines, dullness, tightness). I may be persuaded to up my game a bit for the winter. Thanks 