DER. CONCENTRATE Niacinamide Plus Serum

RNW

DER. CONCENTRATE Niacinamide Plus Serum

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About this product

The RNW DER. CONCENTRATE Niacinamide Plus Serum is a serums, essence, ampoule. Our analysis of its 31 ingredients (30 low-risk) rates it Excellent (100/100). Based on its ingredients, it looks well-suited to oily / acne-prone and dry skin.

Vegan-friendly Reef-safe

Summarised from our ingredient analysis — not brand marketing copy.

At a glance

Type
Serums, Essence, Ampoules
Ingredients
31
Low-risk
30
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 7/5
Good for dry skin
Algae Extract Acetyl Hexapeptide-8 Caprylyl Glycol Butylene Glycol Glycerin Fructooligosaccharides Hydrolyzed Hyaluronic Acid
Caution for dry skin
Xanthan Gum Glycerin Alcohol Hydrogenated Lecithin Tranexamic Acid
Oily/Acne-Prone Skin 2/0
Good for oily/acne-prone skin
Alcohol Tranexamic Acid
Sensitive Skin 2/7
Good for sensitive skin
Ascorbyl Glucoside Glycerin
Caution for sensitive skin
Algae Extract Glutathione Dipropylene Glycol Butylene Glycol Glycerin Alcohol Tromethamine

Ingredients list

31 total
Lower hazard (1) Higher hazard (2)
All31 Skin Conditioning34 Humectant8 Solvent7 Fragrance6 Viscosity Controlling5 Hair Conditioning5 Emulsion Stabilising4 Masking4
EWG CIR Ingredient Name & Cosmetic Functions Notes
1
Water
(Solvent)
1
Methylpropanediol
(Solvent)
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
Niacinamide
(Hair Conditioning, Skin Conditioning, Smoothing)
2
Alcohol
(Antifoaming Agent, Antimicrobial, Astringent, Masking, Solvent, Viscosity Controlling)
Bad for Dry Skin
Bad for Dry Skin
Bad for Sensitive Skin
Bad for Sensitive Skin
1
A
Dipropylene Glycol
(Fragrance, Solvent, Viscosity Decreasing Agent, Masking, Viscosity Controlling)
1
A
1,2-Hexanediol
(Solvent)
1
Ascorbyl Glucoside
(Antioxidant)
1
Glutathione
(Fragrance, Reducing)
Tranexamic Acid
(Cosmetic Astringent, Skin Conditioning)
1
Nonapeptide-1
(Skin Conditioning, Hair Conditioning)
1
Eclipta Prostrata Leaf Extract
(Skin Conditioning)
1
Algae Extract
(Fragrance, Humectant, Oral Care Agent, Skin Conditioning, Emollient)
2
A
Hydrogenated Lecithin
(Skin Conditioning, Emulsifying, Surfactant, Suspending Agent Nonsurfactant)
1
A
Xanthan Gum
(Binding Agent, Emulsion Stabilising, Skin Conditioning, Surfactant Emulsifying Agent, Viscosity Increasing Agent, Binding, Gel Forming, Viscosity Controlling)
1
A
Carbomer
(Emulsion Stabilising, Viscosity Increasing Agent, Gel Forming, Viscosity Controlling)
1
Adenosine
(Skin Conditioning)
1
Fructooligosaccharides
(Humectant, Skin Conditioning)
1
A
Beta-Glucan
(Bulking Agent, Skin Conditioning)
1
A
Butylene Glycol
(Fragrance, Skin Conditioning, Solvent, Viscositydecreasing Agent, Humectant, Masking, Viscosity Controlling)
Good for Dry Skin
Good for Dry Skin
2
A
Tromethamine
(Fragrance, Ph Adjuster, Buffering Agent, Masking)
1
Hydrolyzed Hyaluronic Acid
(Hair Conditioning, Humectant, Skin Conditioning)
1
Acetyl Hexapeptide-8
(Humectant, Skin Conditioning)
1
A
Copper Tripeptide-1
(Skin Conditioning)
1
A
Palmitoyl Tetrapeptide-7
(Skin Conditioning)
1
A
Tripeptide-1
(Skin Conditioning)
1
Palmitoyl Pentapeptide-4
(Skin Conditioning)
1
A
Palmitoyl Tripeptide-1
(Skin Conditioning)
1
Hexapeptide-9
(Skin Conditioning)
1
A
Ethylhexylglycerin
(Deodorant, Skin Conditioning)
1
A
Caprylyl Glycol
(Hair Conditioning, Skin Conditioning, Emollient, Humectant)

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

Glycerin
Humectant, Skin Protecting
Niacinamide
Skin Conditioning
Alcohol
Astringent
Ascorbyl Glucoside
Antioxidant
Tranexamic Acid
Skin Conditioning
Nonapeptide-1
Skin Conditioning

Benefits

Good for dry skin
Good for oily/acne-prone 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
Methylpropanediol
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
Dipropylene Glycol
Fragrance, Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A FragranceSolventViscosity decreasing agentMaskingViscosity controlling
1,2-Hexanediol
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Solvent
Ascorbyl Glucoside
Antioxidant
Low-hazard ingredient.Read moreShow less
EWG 1 Antioxidant
Glutathione
Fragrance, Reducing
Low-hazard ingredient.Read moreShow less
EWG 1 FragranceReducing
Tranexamic Acid
Cosmetic astringent, Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A Cosmetic astringentSkin conditioning
Nonapeptide-1
Skin conditioning, Hair conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 Skin conditioningHair conditioning
Eclipta Prostrata Leaf Extract
Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 Skin conditioning
Algae Extract
Fragrance, Humectant
Low-hazard ingredient.Read moreShow less
EWG 1 FragranceHumectantOral care agentSkin conditioningEmollient
Hydrogenated Lecithin
Skin conditioning, Emulsifying
Low-hazard ingredient.Read moreShow less
EWG 2 CIR A Skin conditioningEmulsifyingSurfactantSuspending agent- nonsurfactant
Xanthan Gum
Binding agent, Emulsion stabilising
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Binding agentEmulsion stabilisingSkin conditioningSurfactant -emulsifying agentViscosity increasing agentBindingGel formingViscosity controlling
Carbomer
Emulsion stabilising, Viscosity increasing agent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Emulsion stabilisingViscosity increasing agentGel formingViscosity controlling
Adenosine
Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 Skin conditioning
+ 13 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
Alcohol
Antifoaming agent, Antimicrobial
Causes moisture evaporation - prone to dry out skinRead moreShow less
EWG 2 Antifoaming agentAntimicrobialAstringentMaskingSolventViscosity controlling Bad for Dry SkinBad for Sensitive Skin
Butylene Glycol
Fragrance, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A FragranceSkin conditioningSolventViscositydecreasing agentHumectantMaskingViscosity controlling Good for Dry 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.

Ascorbyl Glucoside

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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