
Highlights
WHAT IS IT?
Face Serum with Niacinamide
FEATURES
Suitable for all skin types including acne prone, dull and oily skin; Contains active ingredient Niacinamide
BEST FOR
combination
CHECKS
Who Is It For?
What Does It Help With?
Acne Dullness Oily SkinBudget
Affordable (under $30)How To Use
Which routine should it be used in?
Instructions:
Key Information
What mCaffeine Says
Product Description:
mCaffeine Toner Serum Niacinamide Pack of 2
About the Brand:
Ingredients Overview
Ingredients List
Aqua (water), Niacinamide, Butylene Glycol, Coffee Extract, Caffeine, Phenoxyethanol (and) Triethylene Glycol, Acetamidoethoxyethanol, Aqua (and) Lens Esculenta (Lentil) Seed Extract, PEG-40 Hydrogenated Castor Oil, Polyacrylate Crosspolymer-6, Xanthan gum, Sodium Gluconate, Fragrance, CI 15985, CI 42090, CI 17200, CI 19140, CI 16035
Key Ingredients
Niacinamide
Ingredients Details
Acetamidoethoxyethanol
Common Name(s): Acetamidoethoxyethanol,acetamidoethoxyethanol,cosmetic functional ingredient,established cosmetic active
CAS Number: N/a
DESCRIPTION
What It Does: Provides the characteristic cosmetic function of its ingredient class through its molecular chemistry at recommended use concentration.
Why It's Used: Acetamidoethoxyethanol is selected for the specific functional properties of its molecular class โ the chemical architecture of acetamidoethoxyethanol delivers the required cosmetic performance through documented interactions with skin biology and formulation matrix.
How It Works: The functional groups interact with formulation components and skin surfaces through h-bonding, ionic association, surface adsorption, or receptor activity as appropriate to the molecular class.
Typically Found In: Cosmetic formulations
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: 0.1%โ10%
SOURCING & ETHICS
Vegan Status: Conditional
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
Safety documented in cosing and cosmetic chemistry literature at standard formulation concentrations.
Last Verified: Cosing database,acetamidoethoxyethanol technical review
Primary Sources: 2026-03-22
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
Caffeine
Common Name(s): Caffeine,methylxanthine anti-cellulite,antioxidant vasoactive
CAS Number: N/a
DESCRIPTION
What It Does: Stimulates lipolysis in adipocytes by inhibiting phosphodiesterase (preventing camp breakdown), reduces eye puffiness through vasoconstriction of periorbital capillaries, and provides antioxidant dna repair stimulation for photoprotective benefit.
Why It's Used: The only cosmetic active with a well-defined mechanism for anti-cellulite claims โ phosphodiesterase inhibition elevating adipocyte camp is the documented biochemical pathway, providing mechanism-based efficacy substantiation superior to most slimming actives.
How It Works: Caffeine inhibits phosphodiesterase (pde3, pde4) preventing camp hydrolysis โ elevated camp activates protein kinase a โ phosphorylates hormone-sensitive lipase โ lipolysis of triglycerides in adipocytes. for eye puffiness: caffeine's adenosine receptor antagonism reduces prostaglandin-mediated capillary dilation in periorbital tissue, reducing fluid accumulation.
Typically Found In: Anti-cellulite,eye creams,antioxidant products
TECHNICAL DETAILS
Primary Category: Active ingredient โ antioxidant
Secondary Functions: Free radical scavenging,anti-aging
Application Areas:
Facial Skincare
Body Care
Hair Care
Beard Care
Color Cosmetics (Makeup)
Dietary/Oral Supplements
Typical Concentration Range: 0.1%โ3%
SOURCING & ETHICS
Vegan Status: Yes
Halal Status: Yes
Source Notes: Plant-derived extract or synthetic.
SKIN COMPATIBILITY
Irritancy Rating: 1/5 โ very low
Comedogenicity Rating: 0/5 โ non-comedogenic
Sensitivity Concerns: Non-irritating; well-tolerated.
Safe for Sensitive Skin: Yes
SAFETY & COMPATIBILITY
Safety Profile: Excellent safety profile. ewg score: 1.
Works Well With: Vitamin c,vitamin e,ferulic acid,spf,other antioxidants
Avoid Combining With: No significant incompatibilities
SCIENTIFIC NOTE
Caffeine has one of the highest sc penetration rates of any cosmetic active (logp -0.07, mw 194 da) โ the combination of small size and moderate logp providing excellent aqueous solubility with sufficient sc lipid partitioning for effective transdermal delivery to adipose tissue.
Last Verified: Cosing database,caffeine pde inhibitor anti-cellulite lipolysis review
Primary Sources: 2026-03-12
Ci 15985
Common Name(s): Ci 15985,approved cosmetic colorant,colour cosmetics pigment
CAS Number: N/a
DESCRIPTION
What It Does: Provides colour in cosmetic formulations within the permitted application areas and concentrations specified by fda 21 cfr 73/74 and eu cosmetics regulation annex iv.
Why It's Used: Regulatory compliance requires verifying both the permitted use category (fd&c, d&c, ext. d&c) and the specific application area approval for each colorant in each target market.
How It Works: Colour arises from selective wavelength absorption by the chromophore structure โ electronic transitions (d-orbital for transition metal pigments; ฯโฯ* for organic chromophores) absorb specific visible wavelengths providing the perceived complementary colour.
Typically Found In: Colour cosmetics
TECHNICAL DETAILS
Primary Category: Active ingredient โ mineral / metal active
Secondary Functions: Antimicrobial,sebum regulation,antioxidant enzyme cofactor
Application Areas:
Facial Skincare
Body Care
Hair Care
Beard Care
Color Cosmetics (Makeup)
Dietary/Oral Supplements
Typical Concentration Range: Per product type โ check fda/eu permitted list
SOURCING & ETHICS
Vegan Status: Conditional
Halal Status: Conditional
Source Notes: Mineral/inorganic compound. cosmetic or pharmaceutical grade.
SKIN COMPATIBILITY
Irritancy Rating: 1/5 โ very low
Comedogenicity Rating: 0/5 โ non-comedogenic
Sensitivity Concerns: Non-irritating at recommended concentrations.
Safe for Sensitive Skin: Yes at recommended concentrations
SAFETY & COMPATIBILITY
Safety Profile: Excellent safety profile at cosmetic concentrations. ewg score: 1โ2.
Works Well With: Niacinamide,salicylic acid,other actives
Avoid Combining With: No significant incompatibilities at standard concentrations
SCIENTIFIC NOTE
All cosmetic colorants in the us require fda batch certification confirming identity and purity per lot โ uncertified batches cannot legally appear in finished us cosmetics. eu annex iv lists permitted colorants with specific maximum concentrations and use restrictions by product category.
Last Verified: Fda 21 cfr 73/74,eu cosmetics regulation annex iv,colorant regulatory review
Primary Sources: 2026-03-12