The Scalp Serum

Necessaire

Where to buy Possibly in stock

About this product

The Necessaire The Scalp Serum is a misc. Our analysis of its 20 ingredients (15 low-risk) rates it Excellent (100/100). Based on its ingredients, it looks well-suited to oily / acne-prone, dry, and sensitive skin.

Vegan-friendly Reef-safe

Summarised from our ingredient analysis — not brand marketing copy.

At a glance

Type
Misc
Ingredients
20
Low-risk
15
Fragrance
Fragrance-free
Origin
United States

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 4/3
Good for dry skin
Butylene Glycol Sodium Hyaluronate Glycerin Camellia Sinensis Leaf Extract
Caution for dry skin
Sodium Tocopheryl Phosphate Glycerin Camellia Sinensis Leaf Extract
Oily/Acne-Prone Skin 1/0
Good for oily/acne-prone skin
Camellia Sinensis Leaf Extract
Sensitive Skin 4/4
Good for sensitive skin
Sodium Tocopheryl Phosphate Acetyl Tetrapeptide-3 Glycerin Camellia Sinensis Leaf Extract
Caution for sensitive skin
Butylene Glycol Glycerin Citric Acid Camellia Sinensis Leaf Extract

Ingredients list

20 total
Lower hazard (1) Higher hazard (2)
All20 Skin Conditioning10 Hair Conditioning6 Solvent5 Humectant5 Fragrance4 Viscosity Controlling4 Masking3 Skin Protecting3
EWG CIR Ingredient Name & Cosmetic Functions Notes
1
Water
(Solvent)
1
A
Butylene Glycol
(Fragrance, Skin Conditioning, Solvent, Viscositydecreasing Agent, Humectant, Masking, Viscosity Controlling)
Good for Dry Skin
Good for Dry Skin
1
Propanediol
(Solvent, Viscosity Decreasing Agent, Viscosity Controlling)
1
A
Sodium Hyaluronate
(Skin Conditioning, Humectant)
Good for Dry Skin
Good for Dry Skin
1
Acetyl Tetrapeptide-3
(Skin Protecting)
1
A
Niacinamide
(Hair Conditioning, Skin Conditioning, Smoothing)
1
A
Panthenol
(Antistatic Agent, Hair Conditioning, Skin Conditioning)
Good for Dry Skin
Good for Dry Skin
Trifolium Pratense Flower Extract
(Astringent, Fragrance)
Apium Graveolens Seed Extract
(Antioxidant, Perfuming)
1
B
Camellia Sinensis Leaf Extract
(Antimicrobial, Antioxidant, Astringent, Emollient, Humectant, Masking, Oral Care Agent, Skin Conditioning, Skin Protecting, Tonic, Uv Absorber)
Good for Oily Skin
Good for Oily Skin
1
Biotinoyl Tripeptide-1
(Hair Conditioning)
Nicotiana Benthamiana Hexapeptide-40 Sh-Polypeptide-86
(Hair Conditioning)
Nicotiana Benthamiana Hexapeptide-40 Sh-Polypeptide-9
(Hair Conditioning)
Nicotiana Benthamiana Hexapeptide-40 sh-Oligopeptide-1
(Skin Conditioning)
1
Sodium Tocopheryl Phosphate
(Antioxidant, Emulsion Stabilising, Reducing, Skin Conditioning, Emulsifying, Surfactant, Viscosity Increasing Agent, Viscosity Controlling)
1
A
Dextran
(Binding Agent, Bulking Agent, Binding, Viscosity Controlling)
1
A
1,2-Hexanediol
(Solvent)
1
Caprylhydroxamic Acid
(Chelating Agent)
2
A
Citric Acid
(Chelating Agent, Fragrance, Ph Adjuster, Buffering Agent, Masking)
Bad for Sensitive Skin
Bad for Sensitive Skin
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

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

Butylene Glycol
Skin Conditioning, Humectant
Sodium Hyaluronate
Skin Conditioning, Humectant
Acetyl Tetrapeptide-3
Skin Protecting
Niacinamide
Skin Conditioning
Panthenol
Skin Conditioning
Trifolium Pratense Flower Extract
Astringent

Benefits

Good for dry skin
Good for oily/acne-prone skin

Concerns

Not fungal acne (malassezia) safe

Ingredients explained

Water
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 Solvent
Propanediol
Solvent, Viscosity decreasing agent
Low-hazard ingredient.Read moreShow less
EWG 1 SolventViscosity decreasing agentViscosity controlling
Acetyl Tetrapeptide-3
Skin protecting
Low-hazard ingredient.Read moreShow less
EWG 1 Skin protecting
Niacinamide
Hair conditioning, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Hair conditioningSkin conditioningSmoothing
Trifolium Pratense Flower Extract
Astringent, Fragrance
Limited public safety data.Read moreShow less
EWG N/A AstringentFragrance
Apium Graveolens Seed Extract
Antioxidant, Perfuming
Limited public safety data.Read moreShow less
EWG N/A AntioxidantPerfuming
Biotinoyl Tripeptide-1
Hair conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 Hair conditioning
Nicotiana Benthamiana Hexapeptide-40 Sh-Polypeptide-86
Hair conditioning
Limited public safety data.Read moreShow less
EWG N/A Hair conditioning
Nicotiana Benthamiana Hexapeptide-40 Sh-Polypeptide-9
Hair conditioning
Limited public safety data.Read moreShow less
EWG N/A Hair conditioning
Nicotiana Benthamiana Hexapeptide-40 sh-Oligopeptide-1
Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A Skin conditioning
Sodium Tocopheryl Phosphate
Antioxidant, Emulsion stabilising
Low-hazard ingredient.Read moreShow less
EWG 1 AntioxidantEmulsion stabilisingReducingSkin conditioningEmulsifyingSurfactantViscosity increasing agentViscosity controlling
Dextran
Binding agent, Bulking agent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Binding agentBulking agentBindingViscosity controlling
1,2-Hexanediol
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Solvent
Caprylhydroxamic Acid
Chelating agent
Low-hazard ingredient.Read moreShow less
EWG 1 Chelating agent
Butylene Glycol
Fragrance, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A FragranceSkin conditioningSolventViscositydecreasing agentHumectantMaskingViscosity controlling Good for Dry Skin
Sodium Hyaluronate
Skin conditioning, Humectant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioningHumectant Good for Dry Skin
Panthenol
Antistatic agent, Hair conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Antistatic agentHair conditioningSkin conditioning Good for Dry Skin
Camellia Sinensis Leaf Extract
Antimicrobial, Antioxidant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B AntimicrobialAntioxidantAstringentEmollientHumectantMaskingOral care agentSkin conditioningSkin protectingTonicUv absorber Good for Oily Skin
Citric Acid
Chelating agent, Fragrance
Skin irritation can occur at high concentrationRead moreShow less
EWG 2 CIR A Chelating agentFragrancePh adjusterBuffering agentMasking Bad for Sensitive Skin
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

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.

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.

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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