Sulwhasoo First Care Activating Serum The Sulwhasoo First Care Activating Serum ($84) goes on right after you wash your face so whatever moisturiser comes next easily sinks in. It also helps nourish and visibly firm your skin, and 96 percent of people who reviewed this product would also recommend it to others to do those things. Image Source: sephora.com Sulwhasoo First Care Activating Serum $84 from sephora.com Buy Now