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Sleeping Mask (Pack)
Medically reviewed by ChokChok · Updated March 27, 2026
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A thick, occlusive overnight treatment that seals in moisture and actives while you sleep — K-beauty's answer to slugging, but with targeted ingredients.
How It Works
Sleeping masks (자는팩, janeun paek) work as the final step in a Korean night routine, creating a semi-occlusive film that locks in all previous layers. Unlike Western night creams, they're typically gel-textured and water-based, relying on film-forming agents rather than heavy oils. The 6–8 hours of sleep allows actives maximum contact time with skin.
What to Expect
Apply as the absolute last step of your PM routine, after moisturizer. Use a small amount — about a pea-sized to nickel-sized amount — and press gently into skin. Rinse thoroughly the next morning. Use 2–3x per week, or nightly if skin is very dry. The Laneige Water Sleeping Mask is the category's global icon.
Deep Dive
The sleeping mask category was largely pioneered by Laneige in Korea. Modern formulations include ceramide-rich variants (COSRX), ferment-powered options (SK-II-inspired), and targeted treatments for specific concerns like brightening or anti-aging. Key difference from a night cream: sleeping masks are designed to be rinsed off in the morning, functioning more like an overnight mask than a leave-on moisturizer.
Pros
- ✓ Maximises overnight repair window
- ✓ Non-greasy vs Western night creams
- ✓ Works on all budgets
Cons
- ✗ Not ideal for acne-prone — can clog pores
- ✗ Pillow transfer can be annoying
Risks & Side Effects
- ⚠ Heavy formulas may cause milia in some users
✓
Pregnancy Safety
Generally considered safe during pregnancy
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This is not medical advice. Always consult your healthcare provider or dermatologist before trying new treatments, especially in-clinic procedures.
Routines for Related Concerns
Step-by-step K-beauty routines that complement Sleeping Mask (Pack).
Products That Complement Sleeping Mask (Pack)
Products featuring the same key active ingredients — great for extending results between treatments.
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Frequently Asked Questions
How often should I do Sleeping Mask (Pack)?
2–3x per week to nightly. Most people see results within noticeably plumper, softer skin by morning; 2–4 weeks for sustained improvement.
Does Sleeping Mask (Pack) hurt?
The pain level for Sleeping Mask (Pack) is none. Downtime: None.
Is Sleeping Mask (Pack) safe during pregnancy?
Sleeping Mask (Pack) is generally considered safe during pregnancy, but always consult your healthcare provider first.
What are the risks of Sleeping Mask (Pack)?
The main risks and side effects to be aware of: Heavy formulas may cause milia in some users. Always consult a qualified provider, especially for in-clinic procedures.
How much does Sleeping Mask (Pack) cost?
Sleeping Mask (Pack) is in the budget-friendly range. Typical cost: $15–45 per product.
