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Vaseline has had a real comeback moment, and the entire trend costs about $5. “Slugging” — applying a thin layer of petroleum jelly as the last step of your nighttime routine — keeps cycling back into skincare conversation because, unlike a lot of viral trends, there’s real logic behind it. Here’s what it actually does.
What slugging actually is
Petroleum jelly is an occlusive — it doesn’t add hydration itself, but it seals a layer over your skin that prevents the moisture already in your skin (and whatever you applied underneath) from evaporating overnight. Applied as the very last step after your regular routine, it can make your morning skin noticeably softer and less tight, especially in dry climates or during winter.
Who it actually works well for
Dry and dehydrated skin types tend to see the biggest overnight difference, and it’s also commonly recommended after over-exfoliating or using strong actives (retinol, acids) when the barrier needs extra recovery support. It layers well on cracked lips, dry patches on hands, and rough elbows too — you don’t need a separate product for each of those.
Who should be more careful
If you’re acne-prone or your skin runs oily, occlusives can trap excess oil and bacteria against the skin overnight, potentially making breakouts worse — spot-test on a small area first, or skip it on active breakout zones specifically. It’s also not a hydrator on its own: applying Vaseline over bare, dry skin with nothing underneath won’t hydrate, it’ll just seal in whatever dryness is already there.
The actual routine
Cleanse, apply your regular serums and moisturizer as usual, then pat a thin layer of Vaseline over your whole face (or just problem spots) as the final step. A little goes further than you’d think — this isn’t a thick mask, just a light seal.
My verdict
Slugging earns its viral comeback because it’s genuinely useful for dry skin and costs almost nothing — this is one of the rare trends where the $5 product is the correct product, not a compromise. Just skip it on active acne if you’re prone to breakouts, and don’t expect it to hydrate skin that has nothing underneath it to seal in.
Curious if a trending skincare method fits your skin type? Ask — send me a message.
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