If I’m a proponent of one thing, it’s working smarter not harder. That’s why I love Relevant’s approach to skincare. The brand’s small suite of carefully-crafted products yields big results – and its hero product is no joke. The One & Done Everyday Cream With SPF 40 does the work of your sunscreen, moisturizer, serum and primer – and does so extremely well. Here are 4 reasons why I adore this 4-in-1 product…