The Drunk Elephant Protini Peptide Resurf Serum (£69) is aimed at reinforcing and resurfacing the skin. Like the brand's Protini Moisturiser, this serum is packed with peptides (11 different kinds, to be exact), as well as plant-derived growth factors (to help jump-start your skin cells to do things, like grow and divide, or make more collagen and elastin), amino acids, and hydrating ingredients like sodium hyaluronate and sodium PCA. On top of all of that, it also contains 10 percent lactic acid, the gentler alpha hydroxy acid that is both a chemical exfoliant and humectant. Use it in the morning and at night to keep skin smooth, moisturised, and glowy — and to help smooth fine lines and improve skin's texture.