Algenist's Ultra Lightweight UV Defense Fluid SPF 50 ($38) packs all the punch of a heavy-duty sunscreen, but without the tacky texture or the telltale scent. Chock-full of alguronic acid (the brand's magic ingredient), skin is regenerated at a cellular level and protected against environmental stressors. And thanks to its easy-to-spread consistency, the weightless fluid is ideal for under-makeup wear. Plus, it's oil-free, so you don't have to worry about it making you shine for all the wrong reasons. Finally, you can get daily UVA and UVB coverage, all while avoiding an unfortunate T-zone oil slick situation.