Nail slugging is an offshoot of the popular skincare slugging trend you've probably heard about online. "Slugging" generally refers to sealing in moisture to support the skin barrier. Similarly, nail slugging is a subtrend that involves layering an occlusive moisturizer over a cuticle oil for extra moisture and protection. If you already massage oil into your nail beds, think of nail slugging as an additional treatment for days when your nail beds are experiencing a lot of wear and tear. Benefits of nail slugging include strengthening the nails and protecting them from water damage. If you're curious about this trend, try "slugging" your nails once a day or whenever you feel like your nails need extra love.