No.0.5 Scalp Longevity Treatment

Olaplex

No.0.5 Scalp Longevity Treatment

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About this product

The Olaplex No.0.5 Scalp Longevity Treatment is a emulsion. Our analysis of its 45 ingredients (30 low-risk) rates it Excellent (99/100). 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
Emulsion
Ingredients
45
Low-risk
30
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 12/5
Good for dry skin
Glycosphingolipids Glyceryl Stearate Cetearyl Alcohol Sodium Acetylated Hyaluronate Sodium Hyaluronate Crosspolymer Octyldodecanol Sodium Hyaluronate Glycerin Coco-Caprylate/Caprate Cholesterol Hydrogenated Polydecene Lecithin
Caution for dry skin
Stearic Acid Xanthan Gum Glycerin Hydrogenated Lecithin Lecithin
Oily/Acne-Prone Skin No data
Sensitive Skin 1/10
Good for sensitive skin
Glycerin
Caution for sensitive skin
Menthoxypropanediol Stearic Acid Arginine Octyldodecanol Glycerin Phenethyl Alcohol Citric Acid Hydrogenated Polydecene Sodium Benzoate Phenoxyethanol

Ingredients list

45 total
Lower hazard (1) Higher hazard (4)
All45 Skin Conditioning36 Fragrance11 Hair Conditioning10 Solvent8 Emollient8 Emulsion Stabilising6 Emulsifying6 Masking6
EWG CIR Ingredient Name & Cosmetic Functions Notes
1
Water
(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
Propanediol
(Solvent, Viscosity Decreasing Agent, Viscosity Controlling)
1
C9-12 Alkane
(Solvent)
1
A
Octyldodecanol
(Fragrance, Skin Conditioning, Emollient, Perfuming, Solvent)
Bis-Aminopropyl Diglycol Dimaleate
(Hair Conditioning, Hair Waving Or Straightening, Skin Conditioning)
4
A
Phenoxyethanol
(Fragrance, Preservative)
Paraben
Paraben
3
B
Sodium Acrylates Copolymer
(Binding Agent, Film Forming, Viscosity Increasing Agent, Binding, Opacifying, Viscosity Controlling)
Oryza sativa bran oil
(Skin Conditioning, Skin Conditioning Emollient)
1
A
Arginine
(Fragrance, Hair Conditioning, Skin Conditioning, Antistatic Agent, Masking)
2
A
Chlorphenesin
(Cosmetic Biocide, Antimicrobial, Preservative)
Glycine Soja Seed Extract
(Skin Conditioning)
2
A
Hydrogenated Polydecene
(Fragrance, Hair Conditioning, Skin Conditioning, Emollient, Solvent)
2
3
Lecithin
(Skin Conditioning, Emulsifying, Surfactant, Antistatic Agent, Emollient)
1
B
Coco-Caprylate/Caprate
(Emollient, Skin Conditioning)
2
A
Citric Acid
(Chelating Agent, Fragrance, Ph Adjuster, Buffering Agent, Masking)
Bad for Sensitive Skin
Bad for Sensitive Skin
1
Menthoxypropanediol
(Flavoring Agent, Fragrance, Masking, Refreshing)
1
A
1,2-Hexanediol
(Solvent)
1
Ceramide NP
(Hair Conditioning, Skin Conditioning)
1
A
Cetearyl Alcohol
(Emulsion Stabilising, Opacifying, Foam Boosting, Viscosity Increasingagent Aqueous, Viscosity Increasing Agent, Emollient, Emulsifying, Viscosity Controlling)
1
A
Glyceryl Stearate
(Emollient, Emulsifying)
Fungal Acne
Fungal Acne Trigger
Tasmannia Lanceolata Leaf Extract
(Hair Conditioning, Skin Conditioning)
1
B
Phenethyl Alcohol
(Fragrance, Preservative, Masking)
Pogostemon Cablin Leaf/Stem Extract
(Anti Seborrheic, Antimicrobial, Antioxidant, Astringent, Skin Protecting)
Lavandula Angustifolia Flower/Leaf/Stem Extract
(Flavouring, Fragrance, Oral Care, Perfuming, Skin Conditioning)
Lavandula Hybrida Extract
(Skin Conditioning Emollient)
1
A
Pentylene Glycol
(Skin Conditioning, Solvent)
Leptospermum Scoparium Branch/Leaf Oil
(Tonic)
Ceramide AP
(Hair Conditioning, Skin Conditioning)
1
A
Cholesterol
(Emulsion Stabilising, Skin Conditioning, Viscosity Increasing Agent, Emollient, Emulsifying, Stabilising, Viscosity Controlling)
2
A
Hydrogenated Lecithin
(Skin Conditioning, Emulsifying, Surfactant, Suspending Agent Nonsurfactant)
1
Phytosphingosine
(Hair Conditioning, Skin Conditioning)
1
A
Stearic Acid
(Fragrance, Sufactant, Emulsifying, Surfactantsurfactant Cleansing Agent Is Included As A Function For The Soap Form Of Stearic Acid., Emulsion Stabilising, Masking, Refatting)
Bad for Oily Skin
Bad for Oily Skin
Fungal Acne
Fungal Acne Trigger
Magnolia Officinalis Bark Extract
(Antimicrobial, Skin Conditioning)
Piper Nigrum Seed Extract
(Refreshing, Tonic)
Tetraacetylphytosphingosine
(Hair Conditioning, Skin Conditioning)
1
Sodium Acetylated Hyaluronate
(Humectant)
1
A
Sodium Hyaluronate
(Skin Conditioning, Humectant)
Good for Dry Skin
Good for Dry Skin
1
Sodium Hyaluronate Crosspolymer
(Humectant, Skin Conditioning)
1
A
Xanthan Gum
(Binding Agent, Emulsion Stabilising, Skin Conditioning, Surfactant Emulsifying Agent, Viscosity Increasing Agent, Binding, Gel Forming, Viscosity Controlling)
Hydrolyzed Sodium Hyaluronate
(Skin Conditioning)
Ceramide EOP
(Hair Conditioning, Skin Conditioning)
3
A
Sodium Benzoate
(Fragrance, Preservative, Anticorrosive, Masking)
1
A
Ethylhexylglycerin
(Deodorant, Skin Conditioning)
1
Glycosphingolipids
(Skin Conditioning, Emollient)

My Ingredient Notes

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Key ingredients

Glycerin
Humectant, Skin Protecting
Octyldodecanol
Skin Conditioning, Emollient
Bis-Aminopropyl Diglycol Dimaleate
Skin Conditioning
Oryza sativa bran oil
Skin Conditioning
Arginine
Skin Conditioning
Glycine Soja Seed Extract
Skin Conditioning

Benefits

Good for dry skin

Concerns

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

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
C9-12 Alkane
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 Solvent
Octyldodecanol
Fragrance, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A FragranceSkin conditioningEmollientPerfumingSolvent
Bis-Aminopropyl Diglycol Dimaleate
Hair conditioning, Hair waving or straightening
Limited public safety data.Read moreShow less
EWG N/A Hair conditioningHair waving or straighteningSkin conditioning
Sodium Acrylates Copolymer
Binding agent, Film forming
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR B Binding agentFilm formingViscosity increasing agentBindingOpacifyingViscosity controlling
Oryza sativa bran oil
Skin conditioning, Skin conditioning emollient
Limited public safety data.Read moreShow less
EWG N/A Skin conditioningSkin conditioning emollient
Arginine
Fragrance, Hair conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A FragranceHair conditioningSkin conditioningAntistatic agentMasking
Chlorphenesin
Cosmetic biocide, Antimicrobial
Low-hazard ingredient.Read moreShow less
EWG 2 CIR A Cosmetic biocideAntimicrobialPreservative
Glycine Soja Seed Extract
Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A Skin conditioning
Hydrogenated Polydecene
Fragrance, Hair conditioning
Low-hazard ingredient.Read moreShow less
EWG 2 CIR A FragranceHair conditioningSkin conditioningEmollientSolvent
Lecithin
Skin conditioning, Emulsifying
Low-to-moderate hazard.Read moreShow less
EWG 2–3 Skin conditioningEmulsifyingSurfactantAntistatic agentEmollient
Coco-Caprylate/Caprate
Emollient, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B EmollientSkin conditioning
Menthoxypropanediol
Flavoring agent, Fragrance
Low-hazard ingredient.Read moreShow less
EWG 1 Flavoring agentFragranceMaskingRefreshing
1,2-Hexanediol
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Solvent
+ 24 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
Phenoxyethanol
Fragrance, Preservative
Low-to-moderate hazard.Read moreShow less
EWG 4 CIR A FragrancePreservative Paraben
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
Glyceryl Stearate
Emollient, Emulsifying
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A EmollientEmulsifying Fungal-acne trigger
Stearic Acid
Fragrance, Sufactant
Potentially comedogenic - can block poresRead moreShow less
EWG 1 CIR A FragranceSufactantEmulsifyingSurfactantsurfactant-cleansing agent is included as a function for the soap form of stearic acid.Emulsion stabilisingMaskingRefatting Bad for Oily SkinFungal-acne trigger
Sodium Hyaluronate
Skin conditioning, Humectant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioningHumectant Good for Dry Skin

How to use

How to use

  • 1 Morning & evening: Suitable for both AM and PM use.

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

Trust & honesty

Officially notified as a cosmetic in Malaysia (NPRA). Government registration record.

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