Niacinamide 21 Pore Serum

Starlike

Where to buy Possibly in stock

About this product

The Starlike Niacinamide 21 Pore Serum is a serums, essence, ampoule. Our analysis of its 50 ingredients (44 low-risk) rates it Excellent (100/100). Based on its ingredients, it looks well-suited to dry skin.

Vegan-friendly Reef-safe

Summarised from our ingredient analysis — not brand marketing copy.

At a glance

Type
Serums, Essence, Ampoules
Ingredients
50
Low-risk
44
Fragrance
Fragrance-free
Origin
South Korea

The evidence

Quick Product Notes

Paraben-Free Sulfate-Free Alcohol-Free Silicone-Free EU Allergen-Free Fungal Acne (Malassezia) Safe

Notable Effects & Ingredients

No Notable Effects & Ingredients

Ingredients Related to Skin Types

Good   Bad — tap a skin type to see which ingredients · estimated from ingredient functions
Dry Skin 10/5
Good for dry skin
Glucose Glutamic Acid Butylene Glycol Sodium Hyaluronate Glycerin Fructose Fructooligosaccharides Histidine Zinc PCA Hydrolyzed Sclerotium Gum
Caution for dry skin
C12-14 Pareth-12 Xanthan Gum Glycerin Hydrogenated Lecithin Silica
Oily/Acne-Prone Skin No data
Sensitive Skin 4/21
Good for sensitive skin
Cysteine Glycerin Camellia Sinensis Leaf Water Hydrolyzed Sclerotium Gum
Caution for sensitive skin
Glycine Glutamic Acid Dipropylene Glycol Lysine Methionine Valine Serine Cysteine Aspartic Acid Alanine Arginine Isoleucine Butylene Glycol Glycerin Tyrosine Threonine Phenylalanine Proline Histidine Camellia Sinensis Leaf Water Tromethamine

Ingredients list

50 total
Lower hazard (1) Higher hazard (3)
All50 Skin Conditioning53 Fragrance22 Hair Conditioning20 Antistatic Agent15 Humectant13 Masking11 Solvent8 Viscosity Controlling7
EWG CIR Ingredient Name & Cosmetic Functions Notes
1
Water
(Solvent)
1
A
Niacinamide
(Hair Conditioning, Skin Conditioning, Smoothing)
1
Propanediol
(Solvent, Viscosity Decreasing Agent, Viscosity Controlling)
2
A
Glycerin
(Denaturant, Fragrance, Hair Conditioning, Humectant, Oral Care Agent, Oral Health Care Drug, Skin Protecting, Viscosity Decreasing Agent, Perfuming, Solvent)
Good for Dry Skin
Good for Dry Skin
Fungal Acne
Fungal Acne Trigger
1
A
1,2-Hexanediol
(Solvent)
1
Methylpropanediol
(Solvent)
1
A
Dipropylene Glycol
(Fragrance, Solvent, Viscosity Decreasing Agent, Masking, Viscosity Controlling)
1
A
Pentylene Glycol
(Skin Conditioning, Solvent)
1
A
Sodium Hyaluronate
(Skin Conditioning, Humectant)
Good for Dry Skin
Good for Dry Skin
Chondrus Crispus Extract
(Skin Conditioning, Viscosity Controlling)
1
Chlorella Vulgaris Extract
(Skin Conditioning)
1
A
Glucose
(Flavoring Agent, Humectant, Skin Conditioning Agent Miscellaneous)
2
A
Hydrogenated Lecithin
(Skin Conditioning, Emulsifying, Surfactant, Suspending Agent Nonsurfactant)
Saccharum Officinarum Extract
(Moisturising, Skin Conditioning)
1
Acrylates/C10-30 Alkyl Acrylate Crosspolymer
(Emulsion Stabilising, Film Forming, Viscosity Controlling)
1
A
Butylene Glycol
(Fragrance, Skin Conditioning, Solvent, Viscositydecreasing Agent, Humectant, Masking, Viscosity Controlling)
Good for Dry Skin
Good for Dry Skin
1
B
C12-14 Pareth-12
(Emulsifying, Surfactant)
1
Fructooligosaccharides
(Humectant, Skin Conditioning)
1
A
Fructose
(Flavoring Agent, Humectant)
1
2
A
Silica
(Abrasive, Absorbent, Anticaking Agent, Bulking Agent, Opacifying, Viscosity Controlling)
2
A
Tromethamine
(Fragrance, Ph Adjuster, Buffering Agent, Masking)
Hydrolyzed Sclerotium Gum
(Film Forming, Humectant, Skin Protecting)
1
A
Ethylhexylglycerin
(Deodorant, Skin Conditioning)
1
A
Xanthan Gum
(Binding Agent, Emulsion Stabilising, Skin Conditioning, Surfactant Emulsifying Agent, Viscosity Increasing Agent, Binding, Gel Forming, Viscosity Controlling)
1
Adenosine
(Skin Conditioning)
1
Acetyl Glucosamine
(Skin Conditioning)
1
Ceramide NP
(Hair Conditioning, Skin Conditioning)
3
Zinc PCA
(Skin Conditioning, Humectant)
1
B
Camellia Sinensis Leaf Water
(Masking, Perfuming, Tonic)
Good for Oily Skin
Good for Oily Skin
TOCOPHEROL
(Antioxidant, Fragrance, Skin Conditioning)
1
Castanea Crenata Shell Extract
(Skin Conditioning)
1
A
Glycine
(Buffering Agent, Fragrance, Hair Conditioning, Skin Conditioning Agent Miscellaneous, Antistatic Agent, Skin Conditioning)
1
A
Serine
(Fragrance, Hair Conditioning, Skin Conditioning, Antistatic Agent, Masking)
1
A
Glutamic Acid
(Fragrance, Hair Conditioning, Humectant, Antistatic Agent)
Phoenix Dactylifera Seed
(Skin Conditioning)
1
A
Aspartic Acid
(Fragrance, Hair Conditioning, Skin Conditioning, Antistatic Agent, Masking)
1
A
Leucine
(Antistatic Agent, Hair Conditioning, Skin Conditioning)
ASCORBIC ACID
(Antioxidant, Buffering, Fragrance, Skin Conditioning)
1
A
Alanine
(Fragrance, Hair Conditioning, Skin Conditioning, Antistatic Agent, Masking)
1
A
Lysine
(Fragrance, Hair Conditioning, Skin Conditioning, Antistatic Agent)
1
A
Arginine
(Fragrance, Hair Conditioning, Skin Conditioning, Antistatic Agent, Masking)
1
A
Tyrosine
(Fragrance, Hair Conditioning, Proprietary, Skin Conditioning Agent Miscellaneous, Antistatic Agent, Masking, Skin Conditioning)
1
A
Phenylalanine
(Fragrance, Hair Conditioning, Skin Conditioning)
1
A
Proline
(Fragrance, Hair Conditioning, Skin Conditioning)
1
A
Threonine
(Fragrance, Hair Conditioning, Skin Conditioning, Antistatic Agent, Hair Waving Or Straightening)
1
A
Valine
(Fragrance, Hair Conditioning, Skin Conditioning, Antistatic Agent, Masking)
1
A
Isoleucine
(Fragrance, Hair Conditioning, Skin Conditioning, Antistatic Agent)
1
A
Histidine
(Fragrance, Hair Conditioning, Skin Conditioning, Antistatic Agent, Humectant)
1
A
Cysteine
(Antioxidant, Fragrance, Hair Conditioning, Hair Waving/Straighteningagent, Reducing, Antistatic Agent, Hair Waving Or Straightening, Masking)
1
A
Methionine
(Fragrance, Hair Conditioning, Skin Conditioning, Antistatic Agent)

My Ingredient Notes

No personal ingredient notes yet. Save ingredients to your profile to get good/bad alerts here.

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Key ingredients

Niacinamide
Skin Conditioning
Glycerin
Humectant, Skin Protecting
Pentylene Glycol
Skin Conditioning
Sodium Hyaluronate
Skin Conditioning, Humectant
Chondrus Crispus Extract
Skin Conditioning
Chlorella Vulgaris Extract
Skin Conditioning

Benefits

Good for dry skin

Concerns

Not fungal acne (malassezia) safe
May not suit sensitive skin

Ingredients explained

Water
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 Solvent
Niacinamide
Hair conditioning, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Hair conditioningSkin conditioningSmoothing
Propanediol
Solvent, Viscosity decreasing agent
Low-hazard ingredient.Read moreShow less
EWG 1 SolventViscosity decreasing agentViscosity controlling
1,2-Hexanediol
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Solvent
Methylpropanediol
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 Solvent
Dipropylene Glycol
Fragrance, Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A FragranceSolventViscosity decreasing agentMaskingViscosity controlling
Pentylene Glycol
Skin conditioning, Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioningSolvent
Chondrus Crispus Extract
Skin conditioning, Viscosity controlling
Limited public safety data.Read moreShow less
EWG N/A Skin conditioningViscosity controlling
Chlorella Vulgaris Extract
Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 Skin conditioning
Glucose
Flavoring agent, Humectant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Flavoring agentHumectantSkin-conditioning agent- miscellaneous
Hydrogenated Lecithin
Skin conditioning, Emulsifying
Low-hazard ingredient.Read moreShow less
EWG 2 CIR A Skin conditioningEmulsifyingSurfactantSuspending agent- nonsurfactant
Saccharum Officinarum Extract
Moisturising, Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A MoisturisingSkin conditioning
Acrylates/C10-30 Alkyl Acrylate Crosspolymer
Emulsion stabilising, Film forming
Low-hazard ingredient.Read moreShow less
EWG 1 Emulsion stabilisingFilm formingViscosity controlling
C12-14 Pareth-12
Emulsifying, Surfactant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B EmulsifyingSurfactant
Fructooligosaccharides
Humectant, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 HumectantSkin conditioning
+ 31 more — see the full ingredients list above
Glycerin
Denaturant, Fragrance
Low-hazard ingredient.Read moreShow less
EWG 2 CIR A DenaturantFragranceHair conditioningHumectantOral care agentOral health care drugSkin protectingViscosity decreasing agentPerfumingSolvent Good for Dry SkinFungal-acne trigger
Sodium Hyaluronate
Skin conditioning, Humectant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioningHumectant Good for Dry Skin
Butylene Glycol
Fragrance, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A FragranceSkin conditioningSolventViscositydecreasing agentHumectantMaskingViscosity controlling Good for Dry Skin
Camellia Sinensis Leaf Water
Masking, Perfuming
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B MaskingPerfumingTonic Good for Oily Skin

How to use

How to use

  • 1 Where it fits: Apply after toner and before moisturiser — thinnest to thickest.
  • 2 Morning works well: Antioxidants like vitamin C pair well with daytime use under sunscreen.

General guidance from this product's category and active ingredients — always follow the directions on the package.

Trust & honesty

Effective levels — general guide

The concentrations these actives are typically effective at in research — not a measurement of this product.

Vitamin C (ascorbic) 5–20%

L-ascorbic acid is usually used at 5–20% (around 10–15% is common). Above ~20% adds little and tends to irritate more; it also needs a low pH to work.

ASCORBIC ACID

Niacinamide 2–5% (up to 10%)

Most research uses 2–5%; some formulas go to 10%. Very high levels can cause flushing in sensitive skin.

Niacinamide

INCI lists don't disclose amounts, and we don't claim to know this product's levels — these are the ranges these ingredients are usually effective at, so you can tell a real formula from "fairy-dusting" a marketed active. How we estimate this.

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