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OUAI

Leave-In Conditioner

Last verified: April 7, 2026

OUAI Leave In Conditioner

  • Water (Aqua, Eau)
  • Cyclopentasiloxane
  • Cetearyl Alcohol
  • Parfum (Fragrance)
  • Quaternium-91
  • Adansonia Digitata Seed Oil
  • Argania Spinosa Kernel Oil
  • Oenothera Biennis (Evening Primrose) Oil
  • Tocopheryl Acetate
  • Hydrolyzed Rhodophyceae Extract
  • Tamarindus Indica Extract
  • Panthenol
  • Cetearamidoethyldiethonium Succinoyl Hydrolyzed Pea Protein
  • Arginine
  • Aspartic Acid
  • PCA
  • Glycine
  • Alanine
  • Serine
  • Valine
  • Isoleucine
  • Proline
  • Threonine
  • Sodium Hyaluronate
  • Histidine
  • Brassica Campestris/Aleurites Fordi Oil Copolymer
  • Cetrimonium Chloride
  • Glycerin
  • Dipropylene Glycol
  • Polysilicone-29
  • Behentrimonium Chloride
  • Myristyl Myristate
  • Silicone Quaternium-16
  • Leuconostoc/Radish Root Ferment Filtrate
  • Butylene Glycol
  • Undeceth-11
  • Butyloctanol
  • Guar Hydroxypropyltrimonium Chloride
  • Undeceth-5
  • 3-O-Ethyl Ascorbic Acid
  • Sodium PCA
  • Sodium Lactate
  • Phenylalanine
  • Disodium EDTA
  • Citric Acid
  • Iodopropynyl Butylcarbamate
  • Acetic Acid
  • Isopropyl Alcohol
  • Tocopherol
  • BHT
  • Glycolic Acid
  • Sodium Hydroxide
  • Phenoxyethanol
  • Alpha-Isomethyl Ionone
  • Limonene
  • Geraniol
  • Hydroxycitronellal
  • Linalool
  • Citronellol
  • Cinnamyl Alcohol
  • Citral

Why This Product is Rated STOP

Leave-In Conditioner by OUAI has been evaluated by Million Marker and contains ingredients with known health concerns. This product is rated STOP, indicating higher concern.

We recommend avoiding STOP-rated products and seeking safer alternatives from our GO or SLOW categories.

Learn more about how Million Marker scores products →

Frequently Asked Questions

Leave-In Conditioner by OUAI - Non-toxic Hair Styling + Treatment product rated STOP by Million Marker, free from BPA, phthalates, and parabens

Where to buy

OUAI Google Search