Scroll through skincare TikTok for five minutes and you'll meet slugging — the viral overnight ritual of coating your face in a thick layer of petroleum jelly to lock in moisture while you sleep. The results can look dramatic: dewy, plumped, hydrated skin by morning. But slugging skincare is not one-size-fits-all, and for a lot of people the glossy overnight seal causes more problems than it solves.
Below, we'll cover what slugging actually does to your skin, who genuinely benefits from it, who should steer clear, and the gentler alternative most people are better off reaching for — a breathable botanical face oil that seals in moisture with skin-compatible lipids instead of a plastic-feeling film.
What Is Slugging in Skincare?
Slugging is the practice of applying a thick occlusive layer — usually petroleum jelly — as the last step of a nighttime routine to seal in moisture, slow overnight water loss, and support barrier repair.
The name comes from the slick, slug-like sheen the occlusive leaves on your skin. The mechanism is simple: after cleansing and moisturizing, you smooth a petrolatum-based product over everything as a physical cap. That cap does not add hydration — it traps whatever hydration is already there.
To understand why it works, it helps to know how moisturizers function. Dermatologists group ingredients into three categories: humectants that pull water into the skin (glycerin, hyaluronic acid), emollients that soften and smooth (ceramides, fatty acids), and occlusives that form a barrier to stop water from evaporating. According to a review in Clinical Medicine & Research, occlusives like petrolatum, mineral oil, and lanolin work by sitting on the surface and physically blocking evaporation. Slugging is occlusion taken to its maximum.
Does Slugging Actually Work?
Yes — slugging measurably reduces overnight moisture loss. Petrolatum is the single most effective occlusive, cutting transepidermal water loss by roughly 98%, which helps a compromised barrier hold water and recover.
The science here is well established. Transepidermal water loss, or TEWL, is the gold-standard measure of skin barrier integrity — the more water escaping through your skin, the more compromised the barrier. Per a review in the Indian Journal of Dermatology, petrolatum reduces TEWL by more than 98%, with a water-vapor resistance roughly 170 times that of olive oil. No other common occlusive comes close.
For skin that is genuinely dry or barrier-damaged, that seal buys time for repair. The Cleveland Clinic notes that visible barrier recovery takes weeks to months, and keeping water in the skin is central to that process. So slugging works — the real question is whether your skin is the kind that needs it.
Slugging: Who Should Do It & Who Should Skip It
Who benefits most:
People with very dry, flaky, or dehydrated skin, and anyone repairing a damaged barrier — think stinging, rough patches, tightness, or peeling after over-exfoliation or retinoid use. Slugging is also useful in harsh winter air and low humidity, where the skin loses water fast.
Who should be cautious:
Combination and normal skin can slug occasionally on dry patches, but rarely need a full-face seal. If you slug, apply the occlusive only where you're actually dry.
Who should skip it:
Oily, combination, and acne-prone skin. A heavy occlusive traps sebum, sweat, and bacteria against the skin overnight, which can clog pores and spark breakouts — a real risk on melanin-rich skin, where post-breakout marks can linger.
A gentler option for everyone:
A breathable botanical face oil seals in overnight moisture with skin-compatible lipids instead of a full occlusive film — lighter on the skin and far less likely to congest pores.
Is Slugging Bad for Acne-Prone Skin?
For acne-prone skin, slugging is usually a bad idea. Sealing the face under a heavy occlusive traps oil, sweat, and bacteria overnight, which can clog pores, aggravate breakouts, and leave dark marks behind.
The same property that makes petrolatum brilliant for very dry skin — its total, near-complete seal — is exactly what makes it risky for oily and breakout-prone skin. When your skin produces plenty of its own sebum, capping it under an occlusive layer for eight hours gives that oil nowhere to go. The result is congestion, whiteheads, and clogged pores, especially around the nose, chin, and forehead.
There's an added consideration for melanin-rich skin. When a breakout heals, it can leave behind a dark mark — post-inflammatory hyperpigmentation — that takes weeks or months to fade to even tone. Anything that increases the odds of a breakout also increases the odds of those lingering marks, so a technique that triggers congestion carries a higher cost on deeper skin tones. If your skin is acne-prone, the smarter move is a lighter seal that hydrates without suffocating your pores.
What Can You Use Instead of Vaseline for Slugging?
Use a botanical face oil instead of Vaseline. Oils rich in skin-compatible lipids — jojoba, sea buckthorn, rosehip — seal in moisture and nourish the barrier as a lighter, breathable alternative to petrolatum's heavy film.
This is the face oil vs. Vaseline overnight comparison worth understanding. Petrolatum sits inertly on top of the skin and does one job: block evaporation. A well-chosen plant oil does something more nuanced — it provides a partial, breathable seal while delivering lipids and antioxidants the barrier can actually use. A landmark review in the International Journal of Molecular Sciences found that topical plant oils support skin through several pathways at once: reinforcing the barrier, calming inflammation, and adding antioxidant protection.
Jojoba oil is a standout because its wax esters closely resemble human sebum. Research in Polymers notes this structural similarity signals the skin that surface lipids are already present — a feature that makes jojoba unusually well tolerated even on oilier skin. Sea buckthorn contributes omega-7 (palmitoleic acid), a fatty acid naturally found in human sebum, while rosehip adds vitamin C and fatty acids that support even, healthy-looking tone. Together, these skin-compatible lipids act as a breathable occlusive alternative: enough of a seal to slow overnight water loss, without the pore-clogging weight of petroleum jelly.
Face & Body Oil
Loved01 Face & Body Oil is built around this exact idea — a lightweight blend of rosehip, sea buckthorn, jojoba, and sunflower oils that seals in moisture without the heavy, greasy film of a traditional slug. It absorbs quickly, layers cleanly over your moisturizer as a final nighttime step, and is formulated to feel breathable on the skin, so acne-prone and combination skin can seal in overnight hydration without inviting congestion. Gender-neutral and fragrance-light, it's designed to be the last, sealing step for the whole family.
How to Seal in Overnight Moisture with Face Oil
Cleanse gently, apply a humectant moisturizer to slightly damp skin, then seal with a few drops of face oil as your final step. Oils work best pressed onto skin that's still faintly moist.
Order matters. Because a face oil is your sealing layer, it should go on last — after any humectant serum or moisturizer that's actually delivering the water. Dermatology guidance on occlusives, per the Indian Journal of Dermatology, is that they perform best applied to moist skin, where there's water present to trap. So don't wait until your face is bone-dry; press the oil in while your skin still feels faintly damp from your moisturizer.
A little goes a long way — two to four drops warmed between your palms and pressed (not rubbed) over the face is plenty. This is where a lighter seal earns its keep: you get the overnight moisture-lock benefit that draws people to slugging, without the pillowcase-staining film or the morning congestion. For a deeper walkthrough, see our guides on theface oil application technique andhow to use face oil, and fold it into a completenighttime skincare routine that supports theskin barrier as you sleep.
Real Results: What Loved01 Customers Experience
I was suffering from an extreme outbreak of eczema on my face and neck. Within 12 hours my eczema was 60% better and almost completely healed within 48 hours. I've been using it religiously morning and night — my skin is soft and far more balanced in texture. I'm a huge fan of the carrier oils in this blend as they're non-comedogenic. Great product for my dry, sensitive, acne and eczema prone skin. — luv4strawberry
I use the face & body oil as the last thing I do because it helps lock in the moisture from the moisturizer while adding a little more. It doesn't make my face oily & sticky. It helps it from drying out. Especially if you're like me & get dry spots on your face, then you'll definitely want this to help keep your face moisturized. — Britt@94
I use it on my face and it doesn't break me out. I would say I have normal skin, oily on my chin and around nose. I feel like my skin soaks it up and helps the texture and tone of it. — Anps
This is our family's favorite product in the entire LOVED01 line. Super moisturizing and hydrating. Non greasy and quickly absorbed into skin. Leaves skin dewy soft and hydrated for hours. We like that it is plant based and gender neutral for the entire family to use. — Julie22
Frequently Asked Questions About Slugging
Is slugging good for your skin?
It depends on your skin. Slugging can be genuinely good for very dry or barrier-damaged skin, where a heavy occlusive seals in moisture overnight and helps the barrier recover. For oily or acne-prone skin, it often traps sebum and triggers breakouts, so it's not universally beneficial.
Who should not do slugging?
People with oily, combination, or acne-prone skin should generally skip slugging. A pore-blocking occlusive layer can trap oil and bacteria against the skin overnight, worsening congestion and breakouts. On melanin-rich skin, those breakouts can also leave dark marks that take time to fade to even tone.
What can you use instead of Vaseline for slugging?
A botanical face oil is the most practical alternative. Oils rich in skin-compatible lipids — jojoba, sea buckthorn, rosehip — provide a lighter, breathable seal that slows overnight water loss and nourishes the barrier, without the heavy, pore-clogging film of petroleum jelly.
Can you slug with face oil instead of petroleum jelly?
Yes. Applying a few drops of face oil as your final nighttime step gives you a gentler version of the same moisture-sealing benefit. It won't occlude the skin as completely as petrolatum, but for most people — especially those with oily or acne-prone skin — that's exactly the point.
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