Beauty Comparison
Olaplex N°.5 Leave-In Conditioner

Photo and link: Amazon

Olaplex

N°.5 Leave-In Conditioner

conditioner · 100 ml · Haircare

Olaplex N°.5 Leave-In Conditioner is free of essential oils, drying alcohol, sulfates, silicones, parabens and MI / MCI, going by its full 85-ingredient list, with hyaluronic acid, glycerin and lactic acid. List checked November 5, 2026.

The catch: it contains fragrance (Fragrance (Parfum)) and labelled fragrance allergens (Hexyl Cinnamal, Limonene).

  • Contains fragrance
  • No essential oils
  • Contains labelled fragrance allergens
  • No drying alcohol
  • Sulfate-free
  • Silicone-free
  • Paraben-free
  • No MI/MCI

Listed on Amazon in: United Kingdom · Germany · France · Italy · Spain · Netherlands · Poland · Sweden

Key ingredients in N°.5 Leave-In Conditioner

  • Hyaluronic acid

    A humectant that pulls water into the top layer of skin.

  • Glycerin

    A classic humectant that keeps skin hydrated.

  • Lactic acid (AHA)

    A gentler, hydrating exfoliant.

  • Panthenol (pro-vitamin B5)

    Soothes and helps skin and hair hold moisture.

  • Squalane

    A light, skin-compatible emollient.

  • Bond builder

    Repairs broken bonds inside bleached or damaged hair.

  • Vitamin E

    An antioxidant that protects the formula and the skin.

Full ingredient list, decoded

85 ingredients, in label order (highest amount first; below about 1% the order is free).

  1. 1Water/Aqua/EauAqua is the INCI name for water, the main base of many creams, lotions and cleansers…
  2. 2Cetearyl AlcoholA waxy fatty alcohol blend that thickens formulas and helps oil and water mix into…
  3. 3Astrocaryum Murumuru Seed Butter
  4. 4PropanediolPropanediol is a clear liquid that draws water toward the skin. Its jobs are as a…
  5. 5Behentrimonium ChlorideBehentrimonium Chloride is a conditioning agent built from a long, fatty behenyl chain…
  6. 6GlycerinGlycerin is a clear, thick, odorless liquid that pulls water into the skin and helps…
  7. 7Cetyl AlcoholCetyl Alcohol is a waxy fatty alcohol that softens skin and helps creams and lotions…
  8. 8Isoamyl Laurate
  9. 9SqualaneSqualane is a light, oil-like ingredient that softens skin and helps it hold moisture.…
  10. 10Bis-Aminopropyl Diglycol Dimaleate
  11. 11Brassicyl Valinate Esylate
  12. 12Cetyl EstersCetyl Esters is a waxy blend of esters made from cetyl alcohol and fatty acids. It…
  13. 13Pentylene GlycolPentylene Glycol is a small, multi-tasking liquid that attracts water to the skin and…
  14. 14Phenethyl Benzoate
  15. 15Brassica Campestris/Aleurites Fordi Oil Copolymer
  16. 16Hydroxypropyl Guar Hydroxypropyltrimonium ChlorideA plant-based conditioning polymer from guar beans, given a positive charge. Its main…
  17. 17Caprylic/Capric TriglycerideA light, plant-derived oil made from coconut or palm kernel fatty acids and glycerin.…
  18. 18Cetrimonium ChlorideA positively charged conditioning agent from the quaternary ammonium family. It softens…
  19. 19Caesalpinia Spinosa Gum
  20. 20Fructooligosaccharides
  21. 21Beta Vulgaris (Beet) Root Extract
  22. 22Sodium PCASodium PCA is a salt that helps skin and hair hold water. It is a humectant, meaning it…
  23. 23Hydroxypropyl Starch Phosphate
  24. 24Guar Hydroxypropyltrimonium ChlorideA plant-based conditioning polymer made from guar gum, a bean-derived sugar chain with…
  25. 25Sodium LactateSodium Lactate is the sodium salt of lactic acid, a mild alpha hydroxy acid. It mainly…
  26. 26Hydrogenated Ethylhexyl Olivate
  27. 27Calcium Gluconate
  28. 28Argania Spinosa Kernel OilArgania Spinosa Kernel Oil is a plant oil pressed from argan tree kernels. It mainly…
  29. 29Caprylyl GlycolCaprylyl Glycol is a mild, multi-tasking ingredient that softens skin and helps keep…
  30. 30Cocos Nucifera (Coconut) OilCoconut oil is a plant oil pressed from coconut meat that mainly softens skin and hair…
  31. 31PanthenolPanthenol is a form of vitamin B5 that the skin and hair convert to pantothenic acid.…
  32. 32ArginineArginine is an amino acid, one of the natural building blocks of proteins. In hair…
  33. 33EthylhexylglycerinEthylhexylglycerin is a lab-made, skin-friendly ingredient that boosts the power of…
  34. 34Oryza Sativa (Rice) Bran Extract
  35. 35Sodium PhytateA plant-derived salt that acts as a chelating agent, grabbing onto metal ions like…
  36. 36Aspartic Acid
  37. 37Potassium Lactate
  38. 38Ximenia Americana Seed Oil
  39. 39PCA
  40. 40Hydrogenated Olive Oil Unsaponifiables
  41. 41Butylene GlycolButylene Glycol is a clear, odorless liquid that attracts and holds water. It is a…
  42. 42Lactic AcidLactic acid is an alpha hydroxy acid, a mild acid that loosens dead skin cells and…
  43. 43Raphanus Sativus (Radish) Seed Extract
  44. 44Octyldodecyl Oleate
  45. 45OctyldodecanolOctyldodecanol is a light, branched fatty alcohol used as an emollient. Its main job is…
  46. 46Helianthus Annuus (Sunflower) Extract
  47. 47Propylene GlycolPropylene Glycol is a colorless, slightly syrupy liquid that attracts water and is…
  48. 48GlycineGlycine is the simplest amino acid, a small protein building block that helps balance…
  49. 49Citric AcidCitric acid is a mild, naturally occurring acid found in citrus fruit. In skincare and…
  50. 50Alanine
  51. 51Algin
  52. 52Coco-GlucosideCoco-Glucoside is a mild, plant-based cleanser made from coconut-derived fatty alcohols…
  53. 53Sorbitan OleateSorbitan Oleate is a mild emulsifier made from sorbitol and oleic acid, a fatty acid.…
  54. 54SerineSerine is an amino acid, a small building block of proteins, that helps attract and…
  55. 55TocopherolTocopherol is vitamin E, a fat-soluble antioxidant. Its main job is to slow the…
  56. 56Rosmarinus Officinalis (Rosemary) Leaf Extract
  57. 57Valine
  58. 58CarrageenanCarrageenan is a thickening agent taken from red seaweed. It helps water-based formulas…
  59. 59Chitosan
  60. 60Xanthan GumXanthan Gum is a thickener and stabilizer made by fermenting sugar with a bacterium. It…
  61. 61Isoleucine
  62. 62ProlineProline is an amino acid, a building block of protein. In skincare and haircare it…
  63. 63Threonine
  64. 64HistidineHistidine is an amino acid, one of the small building blocks that make up proteins. In…
  65. 65Phenylalanine
  66. 66Magnolia Officinalis Bark Extract
  67. 67Betula Alba Bark Extract
  68. 68Crambe Maritima Extract
  69. 69Ulmus Fulva Bark Extract
  70. 70Caesalpinia Spinosa Fruit Extract
  71. 71Sodium HyaluronateHyaluronic acid is a sugar-based molecule, naturally found in skin, that holds a lot of…
  72. 72Hydrolyzed Ceratonia Siliqua Seed Extract
  73. 73Zea Mays (Corn) StarchA fine white powder made from the starch inside corn kernels. It mainly absorbs oil and…
  74. 74Helianthus Annuus (Sunflower) Sprout Extract
  75. 75Polyquaternium-7This conditioning polymer, made from acrylamide and a positively charged monomer, gives…
  76. 76Sodium HydroxideSodium hydroxide is a strong alkali, also called caustic soda. In small amounts it…
  77. 77PhenoxyethanolA synthetic preservative that helps stop bacteria, yeast and mold from growing in…
  78. 78Sodium BenzoateSodium benzoate is the sodium salt of benzoic acid, a water-soluble powder used mainly…
  79. 79Potassium SorbatePotassium sorbate is the potassium salt of sorbic acid, a mild preservative that helps…
  80. 80Fragrance (Parfum)Aroma is a label term for a scent blend added to a product to give it a pleasant smell.Fragrance
  81. 81Hexyl CinnamalHexyl Cinnamal is a synthetic fragrance ingredient with a soft, floral scent. Its main…Labelled fragrance allergens
  82. 82LimoneneLimonene is a natural scent molecule found in citrus peel oils. It gives products a…Labelled fragrance allergens
  83. 83CitralCitral is a lemon-scented compound found in lemongrass and other citrus oils, used…Labelled fragrance allergens
  84. 84LinaloolLinalool is a fragrance compound found naturally in flowers and herbs, and in skincare…Labelled fragrance allergens
  85. 85CitronellolCitronellol is a fragrance ingredient found naturally in plants like rose and…Labelled fragrance allergens

Source: Open Beauty Facts (ODbL), world.openbeautyfacts.org/product/0850056933285, retrieved November 5, 2026.

Every flag we check

CheckResultIngredients found
FragranceContainsFragrance (Parfum) (#80)
Essential oilsNone listed—
Labelled fragrance allergensContainsHexyl Cinnamal (#81), Limonene (#82), Citral (#83), Linalool (#84), Citronellol (#85)
Drying alcoholNone listed—
SulfatesNone listed—
SiliconesNone listed—
ParabensNone listed—
MI / MCINone listed—
Formaldehyde releasersNone listed—
Mineral oil & petrolatumNone listed—
LanolinNone listed—
Chemical UV filtersNone listed—

Frequently asked questions

Is Olaplex N°.5 Leave-In Conditioner fragrance-free?

No. Olaplex N°.5 Leave-In Conditioner contains Fragrance (Parfum) (ingredient 80 of 85).

Does Olaplex N°.5 Leave-In Conditioner contain silicones, sulfates or parabens?

Silicones: none listed. Sulfates: none listed. Parabens: none listed.

What is Olaplex N°.5 Leave-In Conditioner good for?

By its ingredient list it fits mi allergy, pregnancy, curly hair and color-treated hair: it passes every free-from rule we set for those needs. Key ingredients: Hyaluronic acid, Glycerin, Lactic acid (AHA) and Panthenol (pro-vitamin B5).

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