Lip Sleep Ceramide Lip Butter Sleeping Mask
Lip Sleep Ceramide Lip Butter Sleeping Mask
Product Description
Product overview
COSRX Lip Sleep Ceramide Lip Butter Sleeping Mask is a velvety, butter-soft overnight lip treatment that blankets lips in a rich blend of naturally derived Ceramide NP and Shea Butter, reinforcing the lip's delicate moisture barrier, healing dryness, and leaving lips visibly smoother and plumper by morning. Colorless, unscented, and non-sticky — it's designed for everyone, day or night.
Naturally Derived Ceramide NP
Ceramide NP (ceramide 3) reinforces the lip's lipid barrier, locking in moisture and preventing TEWL (transepidermal water loss). Formulated with its natural precursor Phytosphingosine for maximum ceramide synthesis support.
Texture & feel
SENSORYNaturally Derived Ceramide NP
Ceramide NP (ceramide 3) reinforces the lip's lipid barrier, locking in moisture and preventing TEWL (transepidermal water loss). Formulated with its natural precursor Phytosphingosine for maximum ceramide synthesis support.
Shea Butter + Mango Seed Butter Duo
Butyrospermum Parkii (Shea) Butter and Mangifera Indica (Mango) Seed Butter provide dense, long-lasting occlusive and emollient action, softening and protecting cracked or peeling lips overnight.
Multi-Oil Hydration Complex
Coconut Oil, Jojoba Seed Oil, Castor Seed Oil, and Caprylic/Capric Triglyceride combine to nourish, condition, and restore lipid balance without a greasy residue.
Triple-Wax Protective Film
Beeswax, Candelilla Wax, and Ozokerite create a flexible, breathable protective film that seals in hydration and shields lips from environmental aggressors like wind, cold, and dry air.
Day & Night Versatility
Colorless and unscented — wear a thin layer as a daily lip conditioner under or over makeup, or apply a thick layer as an overnight sleeping mask. One product, two uses.
Clean, Minimal Formula
Only 18 carefully selected ingredients. Free from fragrance, parabens, sulfates, phthalates, dyes, and lanolin. Dermatologist-tested and hypoallergenic — suitable for even sensitive lips.
Safety & compatibility
SAFEContains no retinoids, salicylic acid, hydroquinone, or chemical sunscreens. All ingredients are considered safe during pregnancy and breastfeeding. Always consult your OB-GYN if uncertain.
Contains several fatty acids and esters (Coconut Oil, Castor Oil, Shea Butter, Beeswax) that may feed Malassezia yeast. However, as a lip product applied to the lip area only, systemic fungal acne flares from lip use are uncommon. Use with awareness if you have active perioral fungal breakouts.
Shea Butter (0-2), Coconut Oil (4 on facial skin — but lip skin behaves differently), Jojoba (2), Castor Oil (1). Overall rating for lip-area use is low. Not recommended for application outside the lip border if acne-prone.
Fragrance-free, dye-free, and free from the top 11 common allergens identified by Mayo Clinic research. Certified Hypoallergenic and Dermatologist Tested by COSRX.
No actives or chemical exfoliants in the formula. Compatible with retinol, vitamin C, AHAs/BHAs in your surrounding routine. Apply lip mask after actives to protect the delicate lip area.
COSRX is certified cruelty-free. No animal testing is performed on this product or its ingredients. Not vegan due to Beeswax content.
Ingredient breakdown
INGREDIENTSBis-Diglyceryl Polyacyladipate-2 #1 — ~30%+Proven
The primary base ingredient and #1 on the INCI list. This synthetic ester emollient is derived from adipic acid and glycerin, widely used in lip care for its exceptional skin-feel, non-greasy emolliency, and ability to mimic natural skin lipids. It creates the signature "butter that melts on contact" texture of this product.
- Function: Emollient, texture agent, occlusive — reduces moisture loss and smooths lip surface
- Texture: Creates the distinctive melting, non-sticky balm texture at body temperature
- Safety: Non-irritating, well-tolerated, considered safe for cosmetic use
Butyrospermum Parkii (Shea) Butter #2 — ~20%+Proven
The hero active ingredient and #2 on the INCI list. Shea butter is one of the most extensively studied natural emollients in cosmetics. Rich in stearic acid, oleic acid, and triterpenes (lupeol, butyrospermol), it delivers deep moisturization, anti-inflammatory benefits, and enhanced barrier repair. At the lip surface, it actively reduces dryness, flaking, and discomfort.
- Active Compounds: Stearic acid (~45%), Oleic acid (~45%), Triterpenes — cinnamic acid esters with anti-inflammatory activity
- Clinical Evidence: Multiple studies confirm shea butter's effectiveness as an emollient and anti-inflammatory agent in atopic dermatitis and dry skin conditions
- Barrier Function: Supports lipid barrier integrity — particularly important for thin lip skin which lacks sebaceous glands
Cocos Nucifera (Coconut) Oil #3 — ~10–15%Proven
One of the most studied natural oils in skincare. Rich in lauric acid (medium-chain fatty acid with antimicrobial properties), caprylic acid, and capric acid. On lip skin, coconut oil provides excellent emolliency and helps protect against environmental damage. Its occlusive properties help seal in moisture.
- Lauric Acid content: ~49% — provides mild antimicrobial action on lips
- Clinical use: Shown to reduce TEWL and improve skin hydration in randomized controlled trials
Beeswax #9 — ~5–8%Proven
A time-tested lip care ingredient used in lip balms for centuries. Beeswax creates a flexible, breathable film on the lip surface that locks in moisture without fully occluding the skin. It also contributes to the solid yet melt-on-application texture of this product. Contains naturally occurring propolis compounds with mild antibacterial properties.
- Function: Film-former, emollient, emulsifier, texture structurant
- Lipid composition: Esters of C24–C36 acids — long-chain for durable protective film
Ceramide NP #17 — trace activeProven
Also known as Ceramide 3, this is a skin-identical lipid naturally found in the stratum corneum. Ceramides make up approximately 50% of the intercellular lipid matrix that maintains skin barrier function. Ceramide NP specifically supports barrier integrity, improves skin hydration, and helps prevent moisture loss. Even at low concentrations, ceramides demonstrate measurable efficacy on barrier repair.
- Mechanism: Integrates into the intercellular lipid lamellae, restoring barrier architecture
- Research: Well-documented in peer-reviewed literature for improving TEWL and barrier function in compromised skin
- Synergy: Works in concert with Phytosphingosine — a ceramide precursor — to support endogenous ceramide synthesis
Phytosphingosine #18 — trace activePromising
A sphingoid base naturally found in the upper layers of skin. Phytosphingosine is a direct precursor in the ceramide biosynthesis pathway, meaning it helps the skin produce its own ceramides. It also demonstrates antimicrobial and cell-communicating properties, and is considered part of the skin's natural defense system against external aggressors.
- Function: Ceramide precursor, cell-communicating, antimicrobial, skin-conditioning
- Research: Emerging evidence supports its role in skin defense and barrier reinforcement
Simmondsia Chinensis (Jojoba) Seed Oil #7 — ~3–5%Proven
Technically a liquid wax rather than an oil, jojoba closely mimics the composition of human sebum. It is uniquely non-comedogenic (rating: 2/5), oxidatively stable, and an exceptional emollient. On lips, jojoba provides long-lasting moisture without heaviness and helps soften dry, flaky lip skin.
- Key compound: Gadoleic acid (~71%) — a C20:1 wax ester; structurally unique in plant kingdom
- Stability: Exceptionally resistant to oxidation — no rancidity concerns
Mangifera Indica (Mango) Seed Butter #12 — ~2–4%Proven
Cold-pressed from mango seeds, this exotic butter is rich in stearic and oleic acids with natural antioxidants including tocopherols and polyphenols. It provides rich emolliency, supports barrier repair, and has mild UV-protective properties. Its high stearic acid content contributes to the product's firm yet melt-on-application texture.
- Key compounds: Stearic acid (~40%), Oleic acid (~45%), Tocopherols (natural antioxidant)
- Comedogenic rating: 2/5 — low risk
18 ingredients
Bis-Diglyceryl Polyacyladipate-2, Butyrospermum Parkii (Shea) Butter, Cocos Nucifera (Coconut) Oil, Ricinus Communis (Castor) Seed Oil, Polyglyceryl-3 Distearate, Phytosteryl/Isostearyl/Cetyl/Stearyl/Behenyl Dimer Dilinoleate, Simmondsia Chinensis (Jojoba) Seed Oil, Caprylic/Capric Triglyceride, Beeswax, Ozokerite, Polyethylene, Mangifera Indica (Mango) Seed Butter, Euphorbia Cerifera (Candelilla) Wax, Glyceryl Stearate Citrate, Ethylhexylglycerin, Glycerin, Ceramide NP, Phytosphingosine
Where it fits in your routine
ROUTINEApply as the final step of your PM routine. For daytime use, apply before lip makeup or as a standalone lip treatment anytime lips feel dry.
How to use
HOW TO USEPrep Lips (Optional)
Start with clean, dry lips. For maximum absorption, gently remove any flaky skin or previous lip product with a damp cloth or lip scrub before application.
Scoop & Apply
Using the spatula or a clean fingertip, scoop a pea-sized amount of the product. Apply evenly over the entire lip area, including the lip border. The butter will melt instantly on contact with body heat.
For Daytime Use
Apply a thin layer throughout the day for continuous lip conditioning. Can be worn under or over lip color. Reapply as needed in dry or cold environments.
For Overnight Sleeping Mask
Apply a generous, thick layer as the last step of your evening routine. Leave on overnight — the ceramides and butters will work to repair and replenish the lip barrier while you sleep. Wake up to visibly smoother, plumper lips.
Who is it for?
WHOPerfect for you if:
- You struggle with chronically dry, chapped, or peeling lips
- You want a fragrance-free, colorless lip treatment suitable for sensitive skin
- You prefer K-beauty clean formulas with minimal ingredients
- You want one product that works as both a day balm and overnight sleeping mask
- You're pregnant or breastfeeding and need a safe lip care option
- You use lip-drying matte lipsticks and need intensive overnight repair
- You live in dry, cold, or windy climates that strip lip moisture
Consider alternatives if:
- You have an active bee/propolis allergy (contains Beeswax)
- You prefer vegan-only formulas (Beeswax is not vegan)
- You want a lip product with added plumping peptides or hyaluronic acid
- You have active perioral fungal acne and are strictly avoiding fatty acids in the area
- You prefer a tinted lip balm with color payoff
- You want a lip treatment with SPF sun protection
Skin type compatibility
SKIN TYPESFormulated specifically for this concern. The combination of shea butter, mango butter, and triple wax provides dense, long-lasting moisture that visibly heals severely dry and cracked lips overnight.
Fragrance-free, dye-free, and free of the top 11 allergens. Dermatologist tested and hypoallergenic — an ideal choice for those who react to heavily fragranced or flavored lip products. Patch test recommended for bee/propolis allergy.
Works as a preventive overnight treatment to maintain lip softness and barrier health year-round, even if your lips don't feel severely dry. Lightweight enough for daily maintenance use.
Apply precisely to the lip area only — avoid spreading onto surrounding facial skin if you are acne-prone, as some oils have moderate comedogenic ratings when applied to facial skin. The lip area itself tolerates richer formulas well.
The ceramide barrier replenishment and rich emollient base help improve the appearance of fine lip lines and restore fullness to lips that have lost volume due to moisture depletion. For advanced lip aging concerns, pair with a lip-specific peptide serum.
Results timeline
1–2 MONTHSImmediate Comfort & Softness
The melting butter texture instantly coats and soothes dry, uncomfortable lips. By morning, lips feel noticeably softer and more comfortable, with reduced tightness and flaking.
~90% noticed immediate comfortVisible Reduction in Dryness & Peeling
Consistent nightly use visibly reduces flaking and peeling. Lips appear smoother and more plump. The ceramide barrier begins actively repairing intercellular lipid gaps in the lip skin.
~75% noticed reduced flakingSustained Hydration & Barrier Repair
With continued use, the lips' natural moisture barrier strengthens. Lips hold moisture better throughout the day even without reapplication. Fine lip lines become less prominent as hydration is consistently maintained.
~65% noticed improved daytime hydrationLong-Term Lip Health & Resilience
Lips are noticeably healthier, more resilient to environmental damage, and require less frequent reapplication during the day. The ceramide complex has meaningfully contributed to long-term barrier strengthening.
~55% reported improved year-round lip healthRatings by platform
6K+ REVIEWSPros & cons
BALANCEDPraised
- Completely fragrance-free and unscented — rare among lip masks
- Genuinely non-sticky, matte finish — comfortable under masks and during sleep
- Works for all ages and genders — universally appealing, colorless formula
- Effective overnight results from the very first use
- Clean, minimal 18-ingredient formula — free from nearly all common irritants
- Dual-use: daytime balm AND overnight sleeping mask
- Dermatologist tested and hypoallergenic — suitable for reactive skin
- Long-lasting jar — a 20g pot lasts 2–4 months with nightly use
- Scientifically meaningful ceramide + Phytosphingosine combination
- Safe for pregnancy and breastfeeding
Criticized
- Not vegan — contains Beeswax
- No added plumping actives (peptides, hyaluronic acid) for those wanting more
- No SPF protection — cannot replace a lip balm with sun care
- Jar packaging is less hygienic than a tube format (use the spatula)
- Ceramide NP is near the bottom of the INCI list — concentration is relatively low
- Not fungal-acne safe due to fatty acids — use with caution if you have perioral FA
- Some users with bee/propolis allergy need to avoid or patch test
- No tint or color payoff for those who want a tinted lip balm
Budget-friendly alternatives (dupes)
DUPESA highly comparable drugstore alternative featuring ceramides, jojoba oil, passionfruit, Vitamin E, and chamomile. Thick, balm-like texture. Also fragrance-forward (gentle scent) — good if you want overnight ceramide care at a fraction of the price. Available widely at mass retail.
A popular K-beauty alternative with shea butter, plant oils, and a fruity scent (Berry, Coconut, Vanilla options). Very similar texture and overnight results. Key difference: contains fragrance and flavor — not suitable for those who strictly need fragrance-free. Excellent value for K-beauty enthusiasts.
The classic ultra-budget occlusive option. Petrolatum is one of the most effective moisture-sealing ingredients available and is 100% pregnancy safe. However, it lacks the ceramide complex, plant butters, and emollient richness of the COSRX formula. Best as a bare-bones overnight lip protectant, not a ceramide treatment.
Comparison with competitors
SIDE-BY-SIDEFresh Sugar Lip Treatment Advanced Therapy
Tocobo Vita Glazed Lip Mask
Storage & shelf life
12 MONTHS12 months after opening. Look for the open jar symbol with "12M" on the packaging.
Store in a cool, dry place away from direct sunlight and heat. Do not store above 30°C / 86°F. Avoid exposing to humid bathroom environments which may compromise the formula over time.
20g round glass/plastic jar with screw-top lid. No pump mechanism — use the included spatula or a clean fingertip for hygienic application. Compact, stable packaging keeps the product protected.
Yes — 20g / 0.70 oz is well under the TSA/EU 100ml carry-on liquid limit. Compact jar design fits easily in any toiletry bag or pocket. Ideal for travel, gym bags, and on-the-go lip care.
Frequently asked questions
FAQYes — the COSRX Lip Sleep Ceramide Lip Butter Sleeping Mask is considered safe for use during pregnancy and breastfeeding. The formula contains no retinoids (vitamin A derivatives), salicylic acid, hydroquinone, chemical sunscreens, or other ingredients typically flagged as concerning during pregnancy. All 18 ingredients are plant-derived oils, natural waxes, esters, and skin-identical lipids (ceramides). As always, we recommend consulting with your OB-GYN or dermatologist before introducing new skincare products during pregnancy.
This product is not considered fully fungal acne (Malassezia folliculitis) safe. It contains several fatty acids and esters — including Coconut Oil, Castor Seed Oil, Shea Butter, Beeswax, and Mango Seed Butter — which can theoretically feed Malassezia yeast. However, since this is a lip product applied only to the lip area, systemic or widespread fungal acne flares from lip-specific use are uncommon. If you have active perioral fungal breakouts or Malassezia-sensitive skin around the lip border, use with caution and monitor for any changes. For strictly FA-safe lip care, look for products formulated with mineral oil, petroleum jelly, or squalane.
Yes — COSRX Lip Sleep Ceramide Lip Butter Sleeping Mask contains no active ingredients and is fully compatible with retinol, vitamin C, AHAs (glycolic acid, lactic acid), and BHAs (salicylic acid) in your skincare routine. In fact, it is ideal to apply the lip mask after using active ingredients in your PM routine, as the rich ceramide and butter formula helps protect the delicate lip area from any potential irritation or dryness caused by strong actives. Always apply it as the final lip step of your routine.
COSRX Lip Sleep is designed for all skin types and is particularly beneficial for those with dry, severely chapped, or sensitive lips. The fragrance-free, dye-free, and hypoallergenic formula makes it an excellent choice for sensitive and reactive skin. People with oily or acne-prone skin can also use it effectively — simply apply precisely to the lip area and avoid spreading onto surrounding facial skin. The colorless formula is suitable for all ages and genders.
Most users notice immediate comfort and softness from the very first application. Visible reduction in dryness, flaking, and peeling typically becomes apparent within the first week of consistent nightly use. Meaningful barrier repair and sustained daytime hydration improvement generally occurs over 2–4 weeks of regular use. For the best long-term results, use it nightly as an overnight sleeping mask consistently for at least 4 weeks to allow the ceramide complex to fully rebuild and strengthen the lip moisture barrier.
Apply COSRX Lip Sleep as the very last step of your PM (evening) skincare routine — after cleanser, toner, serums, eye cream, and moisturizer. As a thick, occlusive lip mask, it should be applied after all other products to prevent it from interfering with the absorption of actives. For daytime use, apply a thin layer to bare lips before lip makeup, or reapply throughout the day as a standalone lip conditioner whenever lips feel dry. It can be worn over lip color to add a plumping, protective layer.
The overall comedogenic rating for COSRX Lip Sleep is approximately 2/5 when used as a lip product — considered low risk. Lip skin does not have the same follicular structure as facial skin and is far less prone to clogging from topical products. Some individual ingredients like Coconut Oil have a higher comedogenic rating (4/5) on facial skin, so we recommend applying this product precisely to the lip area and avoiding spreading onto the surrounding cheek or chin area if you are prone to breakouts. Used as directed on lips only, comedone risk is minimal.
The Period After Opening (PAO) for COSRX Lip Sleep is 12 months, indicated by the open jar symbol on the packaging. In terms of product quantity, the 20g jar typically lasts approximately 2–4 months with nightly use as a sleeping mask, and can last longer if used primarily as a daily touch-up balm. Always use the included spatula or a clean fingertip to maintain hygiene and prevent contamination of the formula. Store away from heat and direct sunlight to preserve stability.
Verdict: The COSRX Lip Sleep Ceramide Lip Butter Sleeping Mask earns its reputation as one of the standout K-beauty lip treatments available today. Its strengths are considerable: a genuinely fragrance-free, non-sticky, dermatologist-tested formula built on an intelligent combination of Ceramide NP, Phytosphingosine, Shea Butter, and a multi-oil emollient complex — all in a clean 18-ingredient list free from nearly every common irritant. The overnight results are measurable and consistent, and its dual-use versatility (daytime balm and overnight mask) makes it excellent value. The main limitations are the absence of vegan certification (Beeswax), a relatively low ceramide concentration (near bottom of INCI list), and the lack of added functional actives like peptides or hyaluronic acid for those seeking more than barrier repair. For anyone wanting a clean, fragrance-free, science-informed overnight lip treatment — especially during pregnancy or for sensitive skin — this is a top-tier choice.
Product Overview
Quick product notes are a great way to check if a product is free from commonly avoided ingredients by skincare enthusiasts. These preferences come about for different reasons depending on the ingredient such as personal experiences, sensitivities, health preferences & etc.
Just because a product is not free from a common preference does not mean it's a bad product! You can make a personal decision whether or not you want to use a product that contains these ingredients or not - click the labels of the preference to read more about them.
Quick Product Notes
Ever used a product that promised a certain effect but provided no results? It might not have contained any notable ingredients that could have been responsible for that promised effect. It doesn't matter what the marketing or packaging «promises» it can do, if it doesn't contain anything that can help - then the likelihood of it helping is low.
We help you identify key notable ingredients that have been shown to help with effects such as acne-fighting, brightening, UV-protection, wound healing & anti-aging to help you achieve your skincare goals smarter. Please note that different notable ingredients have varying levels of research behind them, some are extremely well proven yet some have mixed research in their efficacy.
Just because a product doesn't contain any notable ingredients doesn't mean it's bad. And a product with notable ingredients (or even many) doesn't necessarily guarantee the efficacy of the product performing these effects either. There are other factors such as ingredient quality, concentration and formulation that will ultimately determine this.
Be smart and use this as just a starting point for you to make more informed and smarter choices and compare it with reviews to see if the product is right for you
Notable Effects & Ingredients
Why are some products great for some people and horrible for others? Well everyone has different skin types and different reactions to the same ingredients.
We've identified a range of ingredients that are commonly regarded as potentially good or bad for those with Dry, Oily/Acne-Prone or Sensitive skin.
A product that contains good or bad ingredients for your skin type doesn't always flat out make the entire product good or bad for your skin. There are other factors such as ingredient quality, concentration and formulation that will ultimately determine your skins reaction.
One of the best ways to use this section is to troubleshoot products you've had bad experiences with in the past. Check if it contains any of the marked ingredients to point out suspect ingredients to avoid in the future!
Ingredients Related to Skin Types
Ingredient Safety Breakdown refers to the percentage % of ingredients in different risk categories as classified by EWG (Environment Working Group) if they are available. There are almost endless cosmetic ingredients and they are one of the few organisations globally that have assigned ratings to a lot of the more commonly used ingredients which is why we reference them.
EWG is seen by many to be more on the alarmist side in their assignment of health ratings resulting in rating ingredients as riskier than they actually are. We recommend using this a reference point rather than a strict guide of ingredient safety and to always do further research if into ingredients that you may find suspect.
Ingredient Safety Breakdown
Product ingredient list
| EWG | CIR | Ingredient Name & Cosmetic Functions | Notes |
|---|---|---|---|
| 1 |
Bis-Diglyceryl Polyacyladipate-2
Skin Conditioning, Emollient
|
Hydrating
|
|
| 0 |
Butyrospermum Parkii Butter
Skin Conditioning
|
Hydrating
|
|
| 0 |
Cocos Nucifera Oil
Masking, Perfuming, Skin Conditioning
|
Hydrating
|
|
| 0 |
Ricinus Communis Seed Oil
Masking, Perfuming, Skin Conditioning
|
Hydrating
|
|
| 0 |
Polyglyceryl-3 Distearate
Emulsifying
|
|





