Coincidentally, I bought two of these on a whim when they were on special in Superdrug!
I have Wake Me Up and Protect & Glow - they are quite good, I must admit. I'm waiting for summer to use it routinely as they're light moisturisers and I need something a heavier during winter.
Wake Me Up is the same one you're talking about for dull, lacklustre skin. This one is definitely my favourite. I love the citrus-y smell as well.
My skin is normally irritated whenever I slather on a new product, but nothing happened after testing these - hurrah!
Anyone who just read the OP, you ought take advantage of the free samples. They're nice moisturisers. Gwaaaan, do it! DO IT!