Nail Holic Nail Repair Serum

Kosé

Nail Holic Nail Repair Serum

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About this product

The Kosé Nail Holic Nail Repair Serum is a emulsion. Our analysis of its 28 ingredients (21 low-risk) rates it Excellent (97/100).

Vegan-friendly Reef-safe

Summarised from our ingredient analysis — not brand marketing copy.

At a glance

Type
Emulsion
Ingredients
28
Low-risk
21
Fragrance
Fragrance-free
Origin
Japan

The evidence

Quick Product Notes

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

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 2/5
Good for dry skin
Gluconolactone Squalane
Caution for dry skin
Nitrocellulose Stearalkonium Bentonite t-Butyl Alcohol Acrylates Copolymer Silica
Oily/Acne-Prone Skin No data
Sensitive Skin 0/8
Caution for sensitive skin
Gluconolactone Diacetone Alcohol Butyl Acetate Acetyl Tributyl Citrate Ethyl Acetate Phosphoric Acid t-Butyl Alcohol Isopropyl Alcohol

Ingredients list

28 total
Lower hazard (1) Higher hazard (4)
All28 Fragrance10 Film Forming8 Solvent7 Skin Conditioning6 Perfuming4 Plasticizer4 Viscosity Controlling4 Masking3
EWG CIR Ingredient Name & Cosmetic Functions Notes
1
A
Butyl Acetate
(Fragrance, Solvent, Masking)
1
Ethyl Acetate
(Fragrance, Solvent, Perfuming)
1
Nitrocellulose
(Film Forming, Suspending Agent Nonsurfactant)
1
Acetyl Tributyl Citrate
(Fragrance, Plasticizer, Film Forming, Masking, Perfuming)
1
Adipic Acid/Neopentyl Glycol/Trimellitic Anhydride Copolymer
(Film Forming)
2
A
Isopropyl Alcohol
(Antifoaming Agent, Fragrance, Solvent, Viscosity Decreasing Agent, Perfuming, Viscosity Controlling)
Bad for Sensitive Skin
Bad for Sensitive Skin
2
B
Acrylates Copolymer
(Adhesive, Artificial Nail Builder, Binding Agent, Film Forming, Hair Fixing, Suspending Agent Nonsurfactant, Antistatic Agent, Binding)
1
Stearalkonium Bentonite
(Suspending Agent Nonsurfactant, Gel Forming, Viscosity Controlling)
Prunus Amygdalus Dulcis Oil
(Skin Conditioning)
PERSEA GRATISSIMA OIL
(Skin Conditioning)
prunus armeniaca kernel oil
(Fragrance, Skin Conditioning)
TOCOPHEROL
(Antioxidant, Fragrance, Skin Conditioning)
1
A
Macadamia Integrifolia Seed Oil
(Skin Conditioning)
4
A
Benzophenone-1
(Uv Absorber)
4
B
Glycolic Acid
(Exfoliant, Ph Adjuster, Buffering Agent)
Good for Oily Skin
Good for Oily Skin
Bad for Sensitive Skin
Bad for Sensitive Skin
1
Gluconolactone
(Fragrance, Humectant, Solvent)
1
2
A
Silica
(Abrasive, Absorbent, Anticaking Agent, Bulking Agent, Opacifying, Viscosity Controlling)
1
Diacetone Alcohol
(Fragrance, Solvent, Masking)
1
Trimethylpentanediyl Dibenzoate
(Plasticizer)
1
A
Squalane
(Emollient, Hair Conditioning, Refatting, Skin Conditioning)
2
A
t-Butyl Alcohol
(Denaturant, Fragrance, Solvent, Perfuming)
1
Polyvinyl Butyral
(Binding Agent, Film Forming, Hair Fixing, Viscosity Increasing Agent, Binding, Viscosity Controlling)
ELAEIS GUINEENSIS OIL
(Skin Conditioning Emollient)
1
B
Phosphoric Acid
(Fragrance, Ph Adjuster, Buffering Agent)
1
Water
(Solvent)
1
3
Titanium/Titanium Dioxide
(Cosmetic Colorant, Opacifying)
1
CI 77492
(Colorant, Cosmetic Colorant)
3
CI 19140
(Colorant, Cosmetic Colorant)

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

Exfoliators
Removes dead skin cells to smoothe texture.
AHA
Exfoliates skin for a brighter complexion.
PHA
Gently exfoliates and hydrates with less irritation.
Vitamin E
Protects skin and soothes irritation.
Antioxidants
Shields skin from free radical damage.

Benefits

HydratingBoosts hydration and relieves dry, tight skin.
Anti-AgingSoftens lines and helps skin look youthful.
BrighteningRestores radiance to dull, tired skin.
Good For Oily SkinBalances oil and helps reduce shine.
Reduces Large PoresMinimizes the look of enlarged pores.
Acne FightingFights acne and helps prevent breakouts.
Scar HealingImproves the look of marks and scars.
Dark SpotsFades dark spots for even skin tone.

Concerns

May not suit dry skin
May not suit sensitive skin

Ingredients explained

Butyl Acetate
Fragrance, Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A FragranceSolventMasking
Ethyl Acetate
Fragrance, Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 FragranceSolventPerfuming
Nitrocellulose
Film forming, Suspending agent - nonsurfactant
Low-hazard ingredient.Read moreShow less
EWG 1 Film formingSuspending agent - nonsurfactant
Acetyl Tributyl Citrate
Fragrance, Plasticizer
Low-hazard ingredient.Read moreShow less
EWG 1 FragrancePlasticizerFilm formingMaskingPerfuming
Adipic Acid/Neopentyl Glycol/Trimellitic Anhydride Copolymer
Film forming
Low-hazard ingredient.Read moreShow less
EWG 1 Film forming
Acrylates Copolymer
Adhesive, Artificial nail builder
Low-hazard ingredient.Read moreShow less
EWG 2 CIR B AdhesiveArtificial nail builderBinding agentFilm formingHair fixingSuspending agent -nonsurfactantAntistatic agentBinding
Stearalkonium Bentonite
Suspending agent - nonsurfactant, Gel forming
Low-hazard ingredient.Read moreShow less
EWG 1 Suspending agent - nonsurfactantGel formingViscosity controlling
Prunus Amygdalus Dulcis Oil
Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A Skin conditioning
PERSEA GRATISSIMA OIL
Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A Skin conditioning
prunus armeniaca kernel oil
Fragrance, Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A FragranceSkin conditioning
TOCOPHEROL
Antioxidant, Fragrance
Limited public safety data.Read moreShow less
EWG N/A AntioxidantFragranceSkin conditioning
Macadamia Integrifolia Seed Oil
Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioning
Benzophenone-1
Uv absorber
Low-to-moderate hazard.Read moreShow less
EWG 4 CIR A Uv absorber
Gluconolactone
Fragrance, Humectant
Low-hazard ingredient.Read moreShow less
EWG 1 FragranceHumectantSolvent
Silica
Abrasive, Absorbent
Low-hazard ingredient.Read moreShow less
EWG 1–2 CIR A AbrasiveAbsorbentAnticaking agentBulking agentOpacifyingViscosity controlling
+ 11 more — see the full ingredients list above
Isopropyl Alcohol
Antifoaming agent, Fragrance
Low-hazard ingredient.Read moreShow less
EWG 2 CIR A Antifoaming agentFragranceSolventViscosity decreasing agentPerfumingViscosity controlling Bad for Sensitive Skin
Glycolic Acid
Exfoliant, Ph adjuster
Skin irritation can occur at high concentrationRead moreShow less
EWG 4 CIR B ExfoliantPh adjusterBuffering agent Good for Oily SkinBad for Sensitive Skin

How to use

How to use

  • 1 Morning only: Apply as the last step of your AM routine, after moisturiser, and reapply every ~2 hours of sun exposure.
  • 2 Wear SPF the next day: Acids and retinoids increase sun sensitivity — daily sunscreen is a must while using this.

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.

AHA (acid exfoliant) 5–10% (OTC)

OTC leave-on AHAs are usually 5–10%. The effect also depends on pH and free-acid value, not the percentage alone.

Glycolic Acid

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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