Next up is the Deep Treatment Serum ($£8 with membership, £75 without). A little bit goes a long way, because this product packs a punch of grape and citrus antioxidants. Like all the other products in the line, it's free of parabens, sulphates, and phthalates.
Why I love it: I like to wait until that posttoner dampness is completely gone, then this stuff sinks into my skin like a glass of water into a sandcastle. (Weird metaphor? I'm sticking with it.)