The Wishful Thirst Trap Juice HA3 Peptide Serum (£41) is actually an amped-up version of the formula inside the brand's Thirst Trap Cocoon Mask. By adding three different types of hyaluronic acid (hence the HA3 in the product name) and a whole bunch of peptides (the short chains of amino acids in our skin that are responsible for its texture, strength, and resilience), the Thirst Trap formula is even more hydrating and skin-plumping, especially if you use it regularly, which in serum form is very easy to do.