If your feed has shown you someone smearing a thick, shiny layer over their face before bed and waking up glowing, you've met slugging — one of the stickiest skincare trends of the last few years. The classic version uses petroleum jelly. And if "petroleum jelly on my face, all night" gives you pause, you're not alone — there's a natural way to get the exact same benefit.
What slugging actually is
Slugging means sealing your skin with an occlusive layer as the very last step at night. That seal slows how much water evaporates from your skin while you sleep (dermatologists call it transepidermal water loss), so instead of losing moisture overnight, you trap it in — and wake up plumper, softer, and less tight.
It's especially good for skin that's dry, dehydrated, flaky, wind-burned, tight after cleansing, or feeling raw after actives like retinol. In a dry bedroom or a cold month, it can be the difference between waking up parched and waking up comfortable.
Why the original version leaves the natural crowd cold
Here's the honest version, no scare tactics: petroleum jelly is effective and inert — it genuinely seals. But it's a pure occlusive. It locks moisture in without giving your skin anything back. It sits on top like plastic wrap: excellent at trapping, but it doesn't nourish, feed, or repair. For anyone who wants their final step to actually do something for the skin — not just wrap it — that's the gap.
Natural slugging: tallow as the seal
This is where tallow fits the trend almost perfectly. Grass-fed tallow's fatty acids are close to the lipids your own skin makes, and it naturally carries fat-soluble vitamins A, D, E, and K. So it seals like an occlusive and delivers something to the skin underneath.
Natural slugging, in other words, gives you the same overnight seal — but your barrier gets fed, not just shrink-wrapped. Same trend, better last step.
Who should try it — and who should go easy
Try it if your skin is dry, dehydrated, flaky, tight, or recovering from actives and cold weather. This ritual was practically made for that skin.
Go lighter, or patch test first, if you're acne-prone — any occlusive can trap congestion against the skin, so a thin layer a couple of nights a week is smarter than a heavy nightly slather.
How to slug naturally with tallow
- Cleanse gently — no stripping.
- On slightly damp skin, apply your humectant — a hydrating serum or essence. This is the water you're about to seal in.
- Seal with a thin layer of Vivelle tallow cream as your final step. A little goes a long way.
- Sleep on a clean pillowcase.
- Not every night — two or three times a week, or whenever your skin feels parched, is plenty.
One caution: don't slug directly over exfoliating acids or retinol on the same night. Sealing them in can amplify irritation — the whole point here is comfort, not intensity.
What to expect
Softer, plumper, calmer skin in the morning, and less of that first-thing tightness. It's not a miracle or an anti-anything treatment — it's a simple comfort-and-barrier ritual that happens to have a viral name.
Because that's the funny part: slugging isn't new wisdom at all. Sealing the skin overnight is one of the oldest ideas in skincare. The trend just gave it a nickname. The natural version simply swaps petroleum for something your skin already recognizes.
Want to try slugging the natural way? Vivelle's grass-fed tallow cream is a nourishing final seal — five ingredients, no fillers, no water, no farm smell. Shop Vivelle →