Water Sleeping Mask Hydrating Korean Overnight Mask with Squalane & Probiotic-Derived Complex
What it's good for
Key actives from our research database. Click any to read the full evidence dossier.
A workhorse hydrator that pulls water into your skin. In nearly every good moisturizer for a reason.
Good for: Hydrating
A lightweight oil that mimics what your skin already makes. Softens and seals in hydration without feeling greasy.
Good for: Barrier repair, Hydrating
A "postbiotic" (dead probiotic bits) that talks to your skin microbiome without adding live bugs. Patches up a leaky barrier and is friendly even on very reactive skin.
Good for: Barrier repair, Hydrating
A multitasker that calms redness, evens out skin tone, and helps oily skin balance out. One of the safest do-a-little-of-everything ingredients.
Good for: Brightening, Barrier repair, Anti-inflammatory
A pure hydrator that holds water in your skin. Makes skin look plumper and smoother almost immediately.
Good for: Hydrating
A heavy-duty hydrator that also reduces irritation. Often called "better than hyaluronic acid" for sensitive skin.
Good for: Hydrating, Anti-inflammatory
Often pitched as the gentler cousin of hyaluronic acid. It holds water in the skin, fades less quickly in dry air, and quietly buffers against UV oxidative stress.
Good for: Hydrating, Antioxidant, Barrier repair
A hydrator often pitched as "stronger than hyaluronic acid." It sits on the surface, locks water in, and helps your skin make more of its own moisturizers over time.
Good for: Hydrating, Barrier repair
Refills the natural barrier between your skin cells. Locks moisture in, keeps irritants out, calms dry or damaged skin.
Good for: Barrier repair
A workhorse antioxidant that defends your skin from daily oxidative damage. Pairs especially well with vitamin C, and it's in nearly every good moisturizer for a reason.
Good for: Antioxidant
Evidence behind the ingredients
Real citations from our research database, one per tracked active in this product. Click any ingredient name to read its full evidence dossier.
A workhorse hydrator that pulls water into your skin. In nearly every good moisturizer for a reason.
Danby SG et al., Different types of emollient cream exhibit diverse physiological effects on the skin barrier in adults with atopic dermatitis, Clinical and Experimental Dermatology 2022;47(6):1154-1164 — glycerol+urea emollient delivered superior barrier-strengthening and irritant protection
Youssef R et al., Glycerol 85% efficacy on atopic skin and its microbiome: a randomized controlled trial, Journal of Dermatological Treatment 2021;32(7):730-736 — topical glycerol 85% RCT on atopic skin
Evans NJ et al., Human axillary skin condition is improved following incorporation of glycerol into the stratum corneum from an antiperspirant formulation, Archives of Dermatological Research 2017;309(9):739-748 — 4% glycerol penetrated axillary SC, reduced irritation, improved hydration
A lightweight oil that mimics what your skin already makes. Softens and seals in hydration without feeling greasy.
Wolosik K et al., Squalane as a Promising Agent Protecting UV-Induced Inhibition of Collagen Biosynthesis and Wound Healing in Human Dermal Fibroblast, Molecules 2025;30(9):1964 — low-dose squalane (0.005-0.015%) restored collagen biosynthesis and wound healing in UVA-exposed human dermal fibroblasts
Morgan AB et al., Explicating the multifunctional roles of tocotrienol and squalene in promoting skin health, Skin Health and Disease 2024;4(5):e448 — squalene/squalane promotes skin health via antioxidant, hydrating, emollient, anti-inflammatory mechanisms
Fiume M et al., Safety Assessment of Squalane and Squalene as Used in Cosmetics, International Journal of Toxicology 2023;42(3_suppl):107S-109S — CIR expert-panel assessment concluding squalane is safe as a cosmetic ingredient
A "postbiotic" (dead probiotic bits) that talks to your skin microbiome without adding live bugs. Patches up a leaky barrier and is friendly even on very reactive skin.
Algieri F, Pimazzoni S et al. (Italy), Postbiotic derived from Lacticaseibacillus paracasei CNCM I-5220 as a novel approach to improve ageing-induced skin damage, Scientific Reports 2026 — 6-week topical postbiotic application reduced roughness and increased hydration, elasticity, and echogenicity vs placebo; boosted hyaluronic acid in keratinocytes and pro-collagen in fibroblasts
Flores Rodriguez JC et al. (Mexico/Colombia/Costa Rica), Postbiotics in Dermatology: A Literature Review of Emerging Topical Therapies for Acne, Rosacea, and Eczema, Cureus 2026;18(3) — review of 16 studies: postbiotics improved SCORAD and barrier function in atopic dermatitis; reduced inflammatory acne lesions 50-70% and suppressed sebum 42-72%
Flint E et al., Topical Probiotics Reduce Atopic Dermatitis Severity: A Systematic Review and Meta-Analysis, Cureus 2024;16(9):e70001 — SR/MA of topical Lactobacillus probiotics for atopic dermatitis
+−7 more ingredients
A multitasker that calms redness, evens out skin tone, and helps oily skin balance out. One of the safest do-a-little-of-everything ingredients.
Moro F et al., Skin Cancer Prevention and Antiaging: Role of Nicotinamide, International Journal of Molecular Sciences 2026
Passeron T et al., An Investigator-Blinded, Randomized Trial of a Broad-Spectrum Sunscreen Containing Sclareolide and Niacinamide, Dermatology and Therapy (Heidelberg) 2026
Vergilio MM et al., Topical Formulation with Niacinamide Combined with 5 MHz Ultrasound for Improving Skin Ageing, Current Medicinal Chemistry 2025
A pure hydrator that holds water in your skin. Makes skin look plumper and smoother almost immediately.
Karabat MU, Tuncer MC. Effects of hyaluronic acid on skin at the cellular level: a systematic review. Rev Assoc Med Bras. 2025;71(8):e20250208. — Systematic review of 45 studies found low-molecular-weight HA stimulates keratinocyte proliferation and migration while high-molecular-weight HA drives skin hydration, supporting topical HA as an effective skin-hydrating and barrier-supporting ingredient.
Bravo B et al., Benefits of topical hyaluronic acid for skin quality and signs of skin aging: From literature review to clinical evidence, Dermatology and Therapy 2022;12(12):2657-2680 — HA-based cosmeceuticals reliably improve hydration and signs of skin aging
Lee SG et al., Hyaluronan Oligosaccharides Improve Rosacea-Like Phenotype through Anti-Inflammatory and Epidermal Barrier-Improving Effects, Annals of Dermatology 2020
A heavy-duty hydrator that also reduces irritation. Often called "better than hyaluronic acid" for sensitive skin.
Feng X et al., Exploring the Properties and Application Potential of beta-Glucan in Skin Care, Food Science and Nutrition 2025;13(4):e70212 — review concludes beta-glucan exhibits antioxidant, anti-inflammatory, barrier repair, and moisturizing bioactivities
Kussie HC et al., Avenanthramide and beta-Glucan Therapeutics Accelerate Wound Healing Via Distinct and Nonoverlapping Mechanisms, Advances in Wound Care 2024;13(4):155-166 — in vivo: beta-glucan accelerated wound closure with increased angiogenesis
Cao Y et al., Improving the outcome of treating striae gravidarum by combined therapies using topical β-glucan and 1565-nm non-ablative fractional laser, Journal of Dermatology 2022;49(9):829-836 — RCT; topical beta-glucan twice daily for 12 weeks on stretch marks
Often pitched as the gentler cousin of hyaluronic acid. It holds water in the skin, fades less quickly in dry air, and quietly buffers against UV oxidative stress.
Zhang Y et al., iTRAQ-Based Proteomic Profiling of Skin Aging Protective Effects of Tremella fuciformis-Derived Polysaccharides on D-Galactose-Induced Aging Mice, Molecules 2024
Lin M et al., Tremella fuciformis polysaccharides alleviates UV-provoked skin cell damage via regulation of thioredoxin interacting protein and thioredoxin reductase 2, Photochemistry and Photobiology Sciences 2023;22(10) — topical TFPS treatment in chronic UV-irradiated mouse model reduced photoaging markers and protected skin cells from UVA-induced damage
Shen T et al., Tremella fuciformis polysaccharides inhibit UVA-induced photodamage of human dermal fibroblast cells by up-regulating Nrf2/Keap1 pathways, Journal of Cosmetic Dermatology 2021
A hydrator often pitched as "stronger than hyaluronic acid." It sits on the surface, locks water in, and helps your skin make more of its own moisturizers over time.
Ko HJ et al., Poly-gamma-Glutamic Acid from a Novel Bacillus subtilis Strain: Strengthening the Skin Barrier and Improving Moisture Retention in Keratinocytes and a Reconstructed Skin Model, International Journal of Molecular Sciences 2025
Li C, Ma H, Li P, Zhang S et al., Cucumber (Cucumis sativus L.) with heterologous poly-gamma-glutamic acid has skin moisturizing, whitening and anti-wrinkle effects, International Journal of Biological Macromolecules 2024;263(Pt 1):130229 — transgenic gamma-PGA-producing cucumber outperformed standard gamma-PGA and hyaluronic acid on hydration, wrinkles (-19 to -25%), and melanin reduction in human skin testing
Yang R et al., Injectable adaptive self-healing hyaluronic acid/poly(gamma-glutamic acid) hydrogel for cutaneous wound healing, Acta Biomaterialia 2021;127:102-115 — HA/gamma-PGA self-healing hydrogel significantly accelerated full-thickness wound closure with enhanced angiogenesis and collagen deposition vs Tegaderm
Refills the natural barrier between your skin cells. Locks moisture in, keeps irritants out, calms dry or damaged skin.
Andrew PV et al., Topical supplementation with physiological lipids rebalances the stratum corneum ceramide profile and strengthens skin barrier function in adults predisposed to atopic dermatitis, British Journal of Dermatology 2025;193(4):729-740 — physiological-lipid emulsion raised SC ceramide NP/AP and improved barrier function vs control
Nugroho WT, Sawitri, Astindari, Utomo B, Listiawan MY, Ervianti E, Astari L. The Efficacy of Moisturisers Containing Ceramide Compared with Other Moisturisers in the Management of Atopic Dermatitis: A Systematic Literature Review and Meta-Analysis. Indian J Dermatol. 2023;68(1):53-58. — Meta-analysis of 5 studies found ceramide-containing moisturisers produced significantly greater improvement in SCORAD compared with non-ceramide moisturisers in atopic dermatitis.
Shindo S et al., Effects of a moisturizer containing pseudo-ceramide and a eucalyptus extract on sweating function in adult atopic dermatitis: a double-blind, randomized, controlled left-right comparison clinical trial, Journal of Cosmetic Dermatology 2022;21(10):4503-4509 — pseudo-ceramide + eucalyptus moisturizer restored sweating function and barrier in AD adults
A workhorse antioxidant that defends your skin from daily oxidative damage. Pairs especially well with vitamin C, and it's in nearly every good moisturizer for a reason.
Neves JR et al., Efficacy of a topical serum containing L-ascorbic acid, neohesperidin, pycnogenol, tocopherol, and hyaluronic acid in relation to skin aging signs, Journal of Cosmetic Dermatology 2022;21(10):4462-4469 — tocopherol-containing antioxidant serum reduced pollution-induced damage and improved aging signs
Warshaw EM et al., Patch Testing With Tocopherol and Tocopherol Acetate: The North American Contact Dermatitis Group Experience, 2001 to 2016, Dermatitis 2021;32(5):308-318 — 15-year NACDG data: positive patch-test reactions to tocopherol rare given widespread cosmetic use
Lin FH et al., Ferulic acid stabilizes a solution of vitamins C and E and doubles its photoprotection of skin, Journal of Investigative Dermatology 2005;125(4):826-832 — ferulic acid + vit C + vit E combo doubled photoprotection vs C+E alone (cross-listed; same paper cited for Ferulic Acid and Vit C)
Sources: 10 clinical journals and regulatory databases across the US, EU, Korea, Japan, and China. Every entry points to a specific document. See methodology for the full list and what each outcome label means.
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