Slugging is the skincare practice of applying an occlusive layer — usually petroleum jelly — as the final step of your night-time routine to lock in moisture and support the skin barrier.
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What Is Slugging?
The name comes from the dewy, “slug-like” sheen the occlusive leaves on the skin. The product itself does not add moisture; it seals in the hydrating layers you applied underneath, which can help very dry skin and strengthen a weakened skin barrier.
Who Should Try Slugging — and Who Should Skip It
Slugging suits people with very dry skin. It is generally not recommended for oily or acne-prone skin, because the occlusive layer can trap oil and debris against the skin. If your skin is oily, slugging is likely to make things worse rather than better.
How to Slug Your Skin
- Cleanse and moisturise as normal in the evening.
- Apply a thin layer of petroleum jelly over the top as your final step.
- Leave it on overnight and cleanse as usual in the morning.
Exfoliating and Slugging: An Important Caution
Avoid slugging over strong active ingredients such as retinoids or AHA/BHA exfoliants. Occlusion can make these products act more strongly and cause irritation. Exfoliating and slugging on the same night needs that caution — many people keep the two on separate nights.
A Note on “Eye Slugging”
“Eye slugging” is only the social-media name for applying the same occlusive layer around the eyes. It is not a medical condition and does not need treatment.
This article is general information only and is not medical advice. Please consult a healthcare professional for personal advice.