If luxury is what you after then you need to try this Stella McCartney Alter-Care Serum (£110). The price isn't for the fainthearted, but when I tell you this goes on like a dream and keeps my skin feeling and looking hydrated all day I am not lying. It is so moisturising I often don't need to add any additional products and the smell is divine. It also also fully sustainable and refillable — it's nice to see Stella's ethos run through her fashion line and into beauty too.