Highlights
WHAT IS IT?
Serum with multiple ingredients
FEATURES
Improves the look of dark spots and skin brightness
BEST FOR
All skin types
CHECKS
Does not contain parabens, sulfates
Who Is It For?
Adults (inferred) Both Men And WomenWhat Does It Help With?
Dark Spots Skin BrightnessBudget
PremiumHow To Use
Which routine should it be used in?
Instructions:
Key Information
What Sulwhasoo Says
Product Description:
A concentrated ampoule that improves the look of dark spots and skin brightness.
About the Brand:
Ingredients Overview
Ingredients List
AQUA, DIMETHICONE, GLYCERIN, 1,2-HEXANEDIOL, PROPANEDIOL, ALCOHOL DENAT., NIACINAMIDE, BUTYLENE GLYCOL, GLYCERYL POLYMETHACRYLATE, BETAINE, POLYMETHYL METHACRYLATE, AMMONIUM ACRYLOYLDIMETHYLTAURATE/VP COPOLYMER, CETEARYL ALCOHOL, THYMOL TRIMETHOXYCINNAMATE, TRANEXAMIC ACID, XANTHAN GUM, GLYCERYL CAPRYLATE, FRAGRANCE / PARFUM, POLYGLYCERYL-3 METHYLGLUCOSE DISTEARATE, SODIUM POLYACRYLOYLDIMETHYL TAURATE, ETHYLHEXYLGLYCERIN, HYDROXYETHYLCELLULOSE, HYDROGENATED LECITHIN, METHOXY PEG-114/POLYEPSILON CAPROLACTONE, ADENOSINE, GLYCERYL STEARATE CITRATE, PEG-10 DIMETHICONE, MORUS ALBA ROOT EXTRACT, DIPOTASSIUM GLYCYRRHIZATE, DISODIUM EDTA, 3-O-ETHYL ASCORBIC ACID, LINALOOL, HYDROLYZED GINSENG SAPONINS, PANAX GINSENG ROOT EXTRACT, PHENOXYETHANOL, HONEY / MEL / MIEL, BENZYL BENZOATE, REHMANNIA GLUTINOSA ROOT EXTRACT, PAEONIA LACTIFLORA ROOT EXTRACT, LILIUM CANDIDUM BULB EXTRACT, POLYGONATUM ODORATUM RHIZOME EXTRACT, NELUMBO NUCIFERA FLOWER EXTRACT, POLYSORBATE 60, DISODIUM PHOSPHATE, CAPRYLYL GLYCOL, TOCOPHEROL, SODIUM PHOSPHATE, ACETYL HEPTAPEPTIDE-4, ACETYL HEXAPEPTIDE-8, SODIUM HYDROXIDE, ACETYL OCTAPEPTIDE-3
Key Ingredients
Niacinamide, Tranexamic Acid, Ginseng Extract, 3-O-Ethyl Ascorbic Acid
Ingredients Details
Alcohol Denat.
Common Name(s): Alcohol denat.,denatured ethanol,solvent antimicrobial astringent
CAS Number: N/a
DESCRIPTION
What It Does: Alcohol denat. dissolves oil-soluble and water-soluble cosmetic actives, provides rapid antimicrobial activity at concentrations above 60โ70% by denaturing microbial proteins, delivers a refreshing cooling sensation through evaporative cooling on skin, and temporarily enhances the penetration of topical actives by transiently disrupting the stratum corneum lipid bilayer organisation.
Why It's Used: Formulators choose alcohol denat. for its irreplaceable combination of solvent power, antimicrobial activity, and penetration-enhancing properties. no other cosmetic solvent simultaneously provides the cooling sensory experience of alcohol (from evaporative cooling at the skin surface), the immediate antimicrobial activity required for sanitisers (from protein denaturation above 60%), and the transient sc lipid disruption that improves active ingredient delivery (essential in actives-rich toners and essences). for denatured alcohol specifically, denaturing agents (typically 5% isopropanol or bitrex) prevent consumption without affecting cosmetic function.
How It Works: Alcohol denat. works through multiple mechanisms depending on concentration: (1) solvent action โ alcohol's hydroxyl group provides hydrogen bonding with water while the short alkyl chain provides interaction with organic solutes, enabling dissolution of both hydrophilic and moderately lipophilic cosmetic actives in a single solvent; (2) antimicrobial โ above 60% concentration, ethanol denatures microbial proteins by disrupting non-covalent bonds maintaining protein secondary and tertiary structure โ the alcohol molecules intercalate between protein chains, disrupting the hydrophobic interactions and hydrogen bonds that maintain enzyme active site geometry. this non-specific protein denaturation is immediately bactericidal and virucidal with no resistance mechanism possible; (3) sc penetration enhancement โ at lower concentrations (5โ30%), ethanol transiently fluidises the sc lipid bilayer by intercalating between the ordered lipid lamellae, disrupting the crystal packing and increasing lipid bilayer fluidity. this transient fluidisation increases the diffusion coefficient of co-applied actives through the sc for up to 30 minutes post-application; (4) astringency โ alcohol's protein precipitating action at the skin surface contracts superficial proteins, temporarily tightening pores and reducing oiliness.
Typically Found In: Toners,hand sanitisers,actives serums
TECHNICAL DETAILS
Primary Category: Active ingredient โ cosmetic active
Secondary Functions: Skin conditioning
Application Areas:
Facial Skincare
Body Care
Hair Care
Beard Care
Color Cosmetics (Makeup)
Dietary/Oral Supplements
Typical Concentration Range: 5%โ95%
SOURCING & ETHICS
Vegan Status: Yes
Halal Status: Yes
Source Notes: Commercially produced for cosmetic use. verify vegan/halal status with supplier.
SKIN COMPATIBILITY
Irritancy Rating: 1/5 โ very low
Comedogenicity Rating: 0/5 โ non-comedogenic
Sensitivity Concerns: Well-tolerated by most skin types.
Safe for Sensitive Skin: Yes
SAFETY & COMPATIBILITY
Safety Profile: Good safety profile at recommended concentrations. ewg score: 1โ2.
Works Well With: Standard skincare actives
Avoid Combining With: No known significant incompatibilities
SCIENTIFIC NOTE
Ethanol concentration-dependent antimicrobial efficacy: below 40% โ minimal bactericidal effect (insufficient protein denaturation); 40โ60% โ bacteriostatic, not bactericidal; 60โ70% โ peak bactericidal efficacy against both enveloped and non-enveloped viruses and vegetative bacteria (optimal water content maintains protein hydration required for denaturation to proceed); 80โ90% โ remains effective but slightly reduced from decreased water activity; 95โ100% โ reduced efficacy (insufficient water for protein denaturation). the 70% 'sweet spot' for sanitisers reflects this concentration-efficacy peak, not a formulation convenience.
Last Verified: Cosing database,alcohol denat. ethanol solvent antimicrobial review
Primary Sources: 2026-03-12
Betaine
Common Name(s): Trimethylglycine,tmg,natural betaine
CAS Number: 107-43-7
DESCRIPTION
What It Does: Provides osmoprotective humectant conditioning with anti-irritant and mild foam-boosting activity.
Why It's Used: Natural-origin multifunctional osmolyte from sugar beet providing hydration, anti-irritancy, and conditioning in virtually every cosmetic category.
How It Works: Quaternary ammonium betaine provides zwitterionic character for water binding via ionic hydration. osmoprotective function at 100โ500mm as compatible solute protecting cells from osmotic stress. reduces surfactant irritation by competing with sls for protein binding sites. mild foam enhancement.
Typically Found In: Virtually all categories โ moisturisers, shampoos, cleansers
TECHNICAL DETAILS
Primary Category: Functional ingredient โ humectant
Secondary Functions: Tewl reduction,skin plumping
Application Areas:
Facial Skincare
Body Care
Hair Care
Beard Care
Color Cosmetics (Makeup)
Dietary/Oral Supplements
Typical Concentration Range: 0.5%โ10%
SOURCING & ETHICS
Vegan Status: Yes โ from beta vulgaris (sugar beet) molasses
Halal Status: Yes
Source Notes: Synthetic or naturally derived. excellent aqueous solubility.
SKIN COMPATIBILITY
Irritancy Rating: 1/5 โ very low
Comedogenicity Rating: 0/5 โ non-comedogenic
Sensitivity Concerns: Non-irritating; suitable for all skin types.
Safe for Sensitive Skin: Yes
SAFETY & COMPATIBILITY
Safety Profile: Excellent safety profile. ewg score: 1.
Works Well With: Ceramides,emollients,occlusives,glycerin,hyaluronic acid
Avoid Combining With: No significant incompatibilities
SCIENTIFIC NOTE
Betaine's anti-irritant mechanism for surfactant systems involves competitive protein protection: betaine at high concentrations preferentially interacts with skin proteins, occupying binding sites that would otherwise be occupied by surfactant molecules causing protein denaturation. this competition reduces available protein binding for irritating surfactants, explaining betaine's well-documented ability to reduce sls irritation when co-formulated.
Last Verified: Cosing database,craig betaine osmoprotective review,cir safety assessment
Primary Sources: 2026-03-12
Butylene Glycol
Common Name(s): 1,3-butanediol,bg,1,3-butylene glycol
CAS Number: 107-88-0
DESCRIPTION
What It Does: Provides humectant hydration and active ingredient solubilization with excellent skin feel.
Why It's Used: Preferred glycol humectant in premium and k-beauty formulations for superior skin feel vs propylene glycol with equivalent functionality.
How It Works: Two hydroxyl groups at 1,3-positions provide water binding and solvent activity. better tolerated than propylene glycol with minimal sensitization risk. 4-carbon backbone provides slightly greater hydrophobic character enabling dissolution of less polar actives vs pg.
Typically Found In: Toners,essences,serums,k-beauty formulas
TECHNICAL DETAILS
Primary Category: Functional ingredient โ glycol humectant
Secondary Functions: Tewl reduction,skin plumping
Application Areas:
Facial Skincare
Body Care
Hair Care
Beard Care
Color Cosmetics (Makeup)
Dietary/Oral Supplements
Typical Concentration Range: 1%โ10%
SOURCING & ETHICS
Vegan Status: Yes โ synthetic
Halal Status: Yes
Source Notes: Synthetic or naturally derived. excellent aqueous solubility.
SKIN COMPATIBILITY
Irritancy Rating: 1/5 โ very low
Comedogenicity Rating: 0/5 โ non-comedogenic
Sensitivity Concerns: Non-irritating; suitable for all skin types.
Safe for Sensitive Skin: Yes
SAFETY & COMPATIBILITY
Safety Profile: Excellent safety profile. ewg score: 1.
Works Well With: Ceramides,emollients,occlusives,glycerin,hyaluronic acid
Avoid Combining With: No significant incompatibilities
SCIENTIFIC NOTE
K-beauty's preference for butylene glycol over propylene glycol is driven by two factors: bg's superior skin feel (less tacky than pg's higher viscosity) and its lower sensitization potential (1,3-bg has better spatial distribution of hydroxyl groups that reduces protein interaction vs pg's 1,2-position oh groups).
Last Verified: Cosing database,cir safety assessment
Primary Sources: 2026-03-12
Dimethicone
Common Name(s): Pdms,polydimethylsiloxane,silicone fluid
CAS Number: 9006-65-9
DESCRIPTION
What It Does: Provides silicone-characteristic silky feel and skin protection with adjustable viscosity.
Why It's Used: The benchmark cosmetic silicone โ sets the gold standard for silky application feel, spreadability, and skin protection in virtually all skin care categories.
How It Works: Polydimethylsiloxane chain flexibility provides extremely low surface tension and high spreadability. inert si-o backbone provides chemical stability and excellent skin tolerance. occlusive film formation reduces tewl. higher viscosity grades provide more intense conditioning.
Typically Found In: Moisturizers,foundations,primers,sunscreens โ nearly universal
TECHNICAL DETAILS
Primary Category: Functional ingredient โ polydimethylsiloxane
Secondary Functions: Barrier sealing,softening
Application Areas:
Facial Skincare
Body Care
Hair Care
Beard Care
Color Cosmetics (Makeup)
Dietary/Oral Supplements
Typical Concentration Range: 0.1%โ30%
SOURCING & ETHICS
Vegan Status: Yes โ synthetic
Halal Status: Yes
Source Notes: Plant-derived, synthetic or animal-derived. verify source.
SKIN COMPATIBILITY
Irritancy Rating: 1/5 โ very low
Comedogenicity Rating: 1/5 โ low; formulation-dependent
Sensitivity Concerns: Non-irritating.
Safe for Sensitive Skin: Yes
SAFETY & COMPATIBILITY
Safety Profile: Excellent safety profile. ewg score: 1.
Works Well With: Humectants,ceramides,actives as carrier
Avoid Combining With: No significant incompatibilities
SCIENTIFIC NOTE
Dimethicone's exceptional silky feel arises from its very low intermolecular attractive forces (weak van der waals forces due to non-polar methyl groups) that allow silicone chains to slide freely over skin. the coefficient of kinetic friction for pdms against skin (~0.04) is among the lowest of any cosmetic material โ explaining why even small amounts transform product feel.
Last Verified: Cosing database,cir safety assessment
Primary Sources: 2026-03-12