Slugging is easy as pie, but there’s a catch. Start with a clean face clear off makeup, dirt, and grime with a gentle cleanser. Layer on a moisturizing serum, such as one that contains hyaluronic acid ...

Slugging is the latest viral skincare trend that claims to deliver deep hydration, along with the coveted glass-skin effect, by applying a layer of petroleum jelly to the face overnight. But does this ...